I don't have time to write a detailed answer, so I'll just do this.
Mega Gallade: I see this is meant to be more of a utility/stall Gallade than typical hyper-offense Gallade. If you're willing to sacrifice one move, consider adding Swords Dance and perhaps switch Drain Punch for Close Combat.
Snorlax: This is just wierd. I can't tell what Lax's purpose is on this team. A better use for Snorlax is Toxic stalling, but even that's not common anymore.
Snorlax@ Leftovers
Ability: Immunity
EVs: 252 HP / 252 SDef / 4 Def
Impish Nature
- Toxic
- Protect
- Crunch
- Return
Weezing: Good but both Wisp and Toxic? Opt for Will-o-Wisp, which improves your team's overall Defence. Replace it with either Fire Blast for covering Steels who like to wall him or Explosion as a parting gift when you can't go on.
Tyranitar: Not much to complain about here, just standard AV T-Tar.
Togekiss: Nuh-uh. Togekiss is not meant to be an attacker. It is meant for Wish Passing and ParaFlinch. The traditional Togekiss build is:
Togekiss@ Leftovers
Ability: Serene Grace
EVs: 252 HP / 252 SpA / 4 SDef
- Wish
- Protect
- Defog/Thunder Wave
- Air Slash/Dazzling Gleam
Your choice between Defog and Thunder Wave, depending on if you want to be able to switch Chandelure in multiple times without fear of Stealth Rocks or run a ParaFlinch set. Your choice of STAB, although Air Slash is usually preferred once coupled with Serene Grace.
Chandelure: My only suggestion is to replace Psychic with Trick to screw over walls and setup sweepers.
