I agree with you in that amongst the many suggestions done in order to salvage tera in any way this is one of the more sound ones and I would support putting it for debate. My problems with this idea are following, and I know this is circumstancial but let's make the following examples.
Thanks for the actual calm and interesting input on this thought and for the nice words
Let's say you defog with Corv against a Valiant and in the next turn you slow u-turn to Volcarona (provided they unban it after this suggestion is accepted). You want your Volc to tera so you have it itemless and can enter without rocks on the field now. What's stopping it now from doing what it did before?
in that case, you successfully managed to position your sweeper in a spot where they can do a lot of damage, that has always been one of the actual skillfull parts of pokemon but you actually needed to do something for that to happen, it wasnt just "let me use my boots tera ground volc to do volc stuff better than ever" or especially "let me use my lorb tera ground volc to even kill the few checks to my boots set", it was getting your hazardremoval in to remove the hazards while making sure they dont get up again, the opponent doesnt use the turn to set up their val (which could be any kind of booster set with taunt, encore or sd liquidation or even something like a tera sub or tera set to make sure volc doesnt switch in at all)
the pokemon you said didnt have to be volc, the same could happen with a baxcalibur with dd or sd, they could freely rely on their item to carry them to the point where they could tera because they just teraed to ground (or dragon) to setup through their hazardweaknesses because they used boots, same for val: it uses a few sets with booster and a tera type (ive used a few tera ghosts with sub cm) which make it enormously hard to revenge it since it is basically as fast as eleki while being able to completely ignore espeed (and quick attack, fake out, mach punch and vacuum wave), play for mindgames with sucker punch and not get destroyed by bullet punch, ive seen a lot of other sets though
other tera users:
garg without lefties is no garg anymore is a saying i heard a lot and it is true in a way, garg really wants its passive recovery on the switches it forces
DNite: really wants its boots or its cb, otherwise it isnt as long lived and threatening as before
Ting lu: one of quite a few defensive tera users but seriously, ting lu without lefties is like three times as bad as garg without lefties in comparison to with them
kingambit: yeah it isnt hit AS badly, still it really enjoyed lefties for switching in on ghost or dragon moves repeatedly, also air balloon really helped the teams it was on and without black glasses the insane calc against dozo isnt AS insane anymore
Pult: less cheesy tera fighting pults with lorb anyymore, without the powerboost it really just doesnt hit as hard anymore
Enam: i used it as an example a lot, tera ground enam is just a really good teratype on it, it would be worse if it couldnt be boots/specs/scarf on those sets but it would still be great no matter the set
samurott: Oh no, i cant get free spikes while making sure the opponent cant get their spin on me, the metagame will break *irony out* it really wants one of its items but i can see tera ghost be more important on ho or very offensive teams in particular, even though they really want their sash so idk
Sneasler: yeah please stop this tera flying stuff, i dont like that personally as i feel its one of those "predict a turn to win or lose the game" sometimes which just isnt competetive pokemon to me
cresselia: is anyone sad they cant fight opponents with tera poison lefties cress anymore? if so sorry, i cant relate
that should be the most tera users, i cant say all of ou for obvious reasons but i feel like many of these pokemon get enabled by being able to use tera plus item so much that having to choose might actually be difficult and many of these could have good sets on each spectrum, which makes the metagame more interesting, while calming the powercreep down a lot and making balanced teams (the sign of a balanced metagame) better and more popular, sure a lot of the pokemon i didnt list love to use their defensive tera to check something but thats such a weird mechanic as well: "my only way to break through amoonguss is my cinderace, every time i get my cinderace in on their specs gholdengo i have to uturn or double out now though since if i pyro ball and they stay and tera, i lose to amoonguss"
that was only an example to everyone yelling at me on how bad that team is but the same can be said offensively (i brough the amoonguss on sub val now so often that everyone knows it, same goes for a tera flying/fire gambit with tera blast, tera flying sneas, tera ice sandy (i dont think thats too common atm but still it does run around sometimes) and so on, and that was only for one defensive pokemon, if you have a big problem against pokemon x on the opposing side and you usually could use pokemon y to check both x and another one of the opponent, lets call it z, you cant use y to check z unless you want to get killed by something, be it stab tera or some different tera and a stronger move/tera blast and have x sweep you
that was a weird walk through my problem with tera, in the end i just feel like tera is a permanent but a bit weaker zmove with defensive boosting capabilities, a bit like how i see megas, tera just sits awkwardly between those two but springs to the eye due to its nonreliance on an item
Okay so no more Lum Gambit, but bro has so many sets and many dont really rely on the item.
What is better, Scarf Ghold or Tera Flying Ghold?
Ehm... i think i talked a bit too much in the part above, however ill just say that it can very well depend on your team and that is something tera without item is capable of: supporting your team without being overwhelming for the opponent
you lose to bax and have a hard time against zama? use tera fairy dozo and eeven without helmet/lefties it helps your team immensly due to not instalosing
you really hate losing to amoonguss? use tera flying tera blast lando or tera psychic cm valiant, might not sweep outright but you are better versed against this pokemon that the rest of your team hates facing
(the second example actually is a good example of a lureset imo, it has a big opportunitycost but helps your team in the way that youcan use your otherwise good team due to having a good chance to just beat the one pokemon you struggle with)
I feel like amongst the best pokemon who are the best tera abusers, 80% of the time the item has very minimal impact. Is Eleki gonna be any less broken because it can't hold an item?
But I could also argue it from the other side, I mean, if it's proven that running an item is much more valuable than teraing a pokemon, then whats the difference between this clause and an outright ban?
Again, im sorry but it is really hard to answer to this comment one by one due to it being quite connected in itself which i actually like, since it is not just many different arguments but a nice train of thought:
Eleki without specs isnt going to be "fine" that easily so yes, you might be right with that one, however without specs ti doesnt directly kill so much and without boots its not going to love switching into rocks and spikes, still i would guess it is broken even with the "no-item-tera rule", that is very true, i dont know how it would effect espathra as well, since it really enjoyed lefties or a seed but didnt needed it so id say it is still the matchupmon it was before, we actually could look into chien though maybe, since it still is enormously powerful, no questions asked, however without lorb plus tera or cb plus tera or even boots plus tera it isnt as easily to switch in to make use of its breaking potential
i view it as a bit of a faster Kyu-B of gen 7 and yeah that sounds insane, however the powercreep we went through was enough to make tyranitar, a pokemon that was comfortable in ou for six generations, drop to RU (yes i know it lost pursuit which is a big deal but still) and make lando, the king of gen 8 (and tbh every gen from 5 on) ou succumb to another physical ground, in result making chomp hanging by its teeth to keep in ou
oh and the top five and seven of the top ten are from gen 9 (or hisui)
still unsure on chien, that was just a little train of thought i wanted to chase
In conclusion, I'm all for discussing this suggestion and I would love to be proven wrong but I don't feel it's going to be what we need.
I'm very much for discussing it as well, thank you a lot for your thoughts and would love an answer on what you see similarly and what you see completely different, my vision is very much tainted by my glasses as a fan of gen 7 with its many options to build ho, stall and everything inbetween and be successful, id love for gen 9 to become similar and as already said above i see tera as a mix of z-moves and megas, so why not make it similar in the cost as well