We've had four weeks of post-Thunder Wave gameplay since Vintage started. Here are my thoughts on how the metagame has shifted, for the better imo.
:dp/azelf:
I really like this guy? And I used to be one of its biggest haters. Azelf sits at an incredible 115 Speed tier which puts it above Latias. So many useable moves including stab Psychic, fast U-turn, the fastest viable Explosion in the tier, Fire Blast, Stealth Rock, and Taunt. Super strong guy when it comes to generating momentum, would definitely bump it up in the VR.
:dp/mew:
Speaking of legendary Psychics, here's Mew. I think Mew was probably just on the cusp of tier 1 status again after Derby but I think the Thunder Wave ban has been a nice boost for it. Things that went for Twave on Mew were generally more comfortable taking the paralysis than Mew was (I'd sure hope so after all, we know what Synchronize does). It shouldn't come as a shock that this is the most versatile Pokemon in the tier, though I wouldn't call it a master of anything, it can always find something to do for literally any team.
:dp/latias:
Speaking of legendary Psychics, here's Latias. Here's the thing. I really don't think Latias is banworthy right now. I think it still cements itself as the best Pokemon in the tier of course, but I think allowing faster Pokemon like Raikou, Azelf, and Scarfers to actually contend with Latias instead of getting crippled by Thunder Wave is a good thing.
:dp/zapdos: :dp/raikou: :dp/rotom-mow: :dp/rotom-heat:
Electrics! I think the gap has definitely narrowed between them. Zapdos was clearly the best at spreading Thunder Wave as its bulk and Ground immunity make it more resilient than Raikou. I do think the Tailwind Zapdos that Sunrose has been using is pretty good. I used Calm Mind Raikou for one of my vintage rounds and was pleasantly surprised by its effectiveness. Bulky Specs and Scarf Rotoms also definitely feel good to play with again. The former has a formidable damage output and can be quite hard to remove quickly while Scarf sets do an excellent job at cleaning. I think I like Mow's Leaf Storm coverage more than Heat's Overheat in the current meta, hitting Swampert, Tyranitar, and Rhyperior is some pretty huge value. Don't use Washtom, just run an actual Water type.
:dp/hitmontop:
Hitmontop is another old meta relic I've definitely found myself using more. If you can't gain control of the board through paralysis you're gonna need to resort to other methods and Hitmontop is a pretty good guy for the job. Dude's just got a great kit - the only Intimidate + Fake Out option we've got, Fighting + (priority) Dark coverage, and even a free moveslot for things like Toxic, Helping Hand, Rapid Spin, or even just Protect on the guy most people assume won't have it.
:dp/heatran: :dp/metagross:
I really like running Substitute on these guys. Fast sub Steels just have the ability to get behind a sub and emit a wave of pressure that the pilot can easily abuse. Obviously they're solid Pokemon outside of these sets but just a set I've liked using a lot on both.
:dp/swampert: :dp/gyarados:
I don't really think Swampert has gotten any worse than it was at the point in the meta where everyone realized they should run multiple Grass coverage options for it specifically. It sits on a lot of Pokemon. Clicks pretty powerful moves. All well and good. But man Gyarados just feels soooo much better now that the pool of mons it can DD on has increased by a pretty significant amount. I was quite hesitant to run the Stone Edge set but honestly the coverage on Zapdos and opposing Gyarados is so good that I think the accuracy fears are worth it.
Here's a team that features 6 mons I talked about in this post, it won me a round in vintage and I think it is pretty epic (click sprites)
:azelf: :hitmontop: :rotom-mow: :metagross: :latias: :gyarados:
My enjoyment of this tier has significantly improved following the twave ban. I am so excited to keep playing and building DPP again. This tier rules.