Although I have my doubts about getting reqs, I am thinking Victini should remain in BL
I am testing victini on the (lower) ladder, and while the quality of games does not bear posting, I think the major thing I've found about victini is that it has the ability to adapt to whatever checks you try to throw at it.
For instance, I've made the insane choice to NOT use V-create and I have to say that I'm actually really glad I ditched that move. Using a predominant special based victini, with bolt-strike over t-bolt (because I don't trust thunder's accuracy even after the boost to accuracy), I've found it great because a majority of the offensive checks either
1. Really need victini to lose a speed stage from v-create to ensure they force it out
2. need rocks up and the defense drops not to get boned by the victini player outpredicting the pursuit. (this especially applies to M-Aero and CS Krookodile)
3. The 20% burn chance from blue flare is also irritating for a lot of mons to want to switch into, even if it isn't quite as bad as scald.
The bulk of victini is pretty solid to write home about. Being able to live scalds from bulky water's with a naive nature while you 2-3HKO them upon them switching in is just cruel.
Special tini getting walled by blissey sucks, but the thing is that your checks to either set usually end up being very passive (and thus, exploitable by other members of your team), outside of snorlax/M-amph. Offensive checks, as I've said, are so dependent on V-create being fired off that they simply falter after slight prior damage if they can't outrun it.
Hoping it stays banned for now. I do get checks exist, but prediction goes both ways, and I would be immensely pissed off if I had to jam lax/cresselia on every team I make a la gen V. I just don't want a repeat of the chandelure suspect where lax+ 1 or 2 mons was considered good enough for something to stay, especially when victini very much has the tools to bypass its checks without too much compromise to its overall effectiveness.
Edit: Might as well include the set I'm using, in case people want to try it out, or more likely, edit it to fit their teams needs
Victini @ Charcoal
Naive
4 Atk, 252 SpA, 252 Spe
-Blue Flare
-Bolt Strike
-Grass Knot
-Dazzling Gleam
I've nailed quite a few hydreigon with dazzling gleam already, which is immensely satisfying, though my team could benefit from glaciate's speed drop. Also good for dealing decent damage to mega-amph and every other dragon about. Otherwise the movepool is reasonably standard other than the lack of V-create.