What Im saying is that we first should have some basic guidelines that every type can have access to. I quoted very basic "niches" (if you could even call them that) like "strong move" for a reason.
No, I don't think you need any foundation like that at all -- you should just make them as you need them.
I'm in general agreement with Kurona that, at this point, we should really only be making moves where they are needed... HOWEVER that's not saying there isn't places where we need moves that would fit what Lemingue has been saying. One good place to start, aside filling "gaps" certain moves have, is looking through Abilities that work with a certain group of Moves, what Pokemon has them, and maybe making a move that Pokemon would appreciate to have that works with their Ability. For example, the Strong Jaw Ability. The Tyrunt family & the Chewtle family has no STAB with it & a lot of Water-types have it even though there's no normal Water-type biting move. If they at least made a Water-type and Rock-type biting move that would solve those problems, maybe even make a Dragon-type biting move so Tyrunt has two STABs!
Going back to the Sceptile example, we didn't have any strong Grass-type moves before Leaf Blade - outside of Solarbeam which had caveats attached - because there was no need for one. Why should there exist a strong Grass-type move if Venusaur, Vileplume, Celebi etc. aren't supposed to be doing that in the first place? Just make it when you need it -- and sure enough when they made Sceptile, they made Leaf Blade.
So where is Weavile's Ice-type Leaf Blade?
While the cats getting it probably is meant to be a pun (though considering the name, the technique was probably named after the cats in real life), I don't think "Fake Out" is meant to be a force of strength?
Its meant to startle the opponent, you clap in front of them and it makes them fall back or stunned for a second. An, uh, literal flinch. I've had it happen to me before, it was this whole "thing" at my middle school of trying to get people to blink/flinch. You know kind of like throwing a fake punch or swiping at the air in front of someone.
Probably why it goes to all sorts of pokemon over the years and not just cats & strong/bulky dudes. You got a bunch of lizards, frogs, weird psychic types, monkeys, tengu, penguins...
Honestly surprised it doesnt go to like every dark type.
It's actually based on a sumo wrestling technique. As for why it isn't Dark-type, guess they consider the user getting a free Flinch off the opponent was a bit too strong of an effect to also add potential super effective damage.
It's wild to imagine a world where PvP in Pokémon doesn't exist. A more peaceful world.
Well... Pokemon wouldn't exist. Pokemon was built off the idea of trading and battling other players over the GB Cable.
It could have been Simipour's signiture move, as it seems to be based on a geyser, which fits scald perfectly. And then some other random Pokemon could have gotten it in later gens, like Volcanion or something.
With that thinking the only Water-types that should get Scald is Blastoise (I can see it heating the water in its cannon), Remoraid family (similar idea, they're based on artillery), Panpour family (has a geyser design), Clauncher family (partially based in a pistol shrimp), & Volcanion.