It just occurred to me. I think the biggest aspect of Kommo-o's Z-move that'll distinguish itself apart from the other Z-Celebrate sweepers is the fact that thanks to its set up move being an actual attack, Kommo-o can run a 4th coverage move. I can see a set like this putting in some work in OU:
Kommo-o @ Kommonium Z
Ability: Bulletproof
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Clanging Scales
- Focus Blast
- Flash Cannon
- Flamethrower / Hidden Power Electric / Draco Meteor
Flamethrower will let it hit mons like Magearna, Mega Mawile, and Celesteela more reliably than Focus Miss, doing around the same damage, while also cleanly OHKOing Ferrothorn and Mega Scizor. Meanwhile, HP Electric will 2HKO the likes of Mantine when boosted, and Draco can be a last-ditch effort move to hit a neutral target for much more damage if you see that your sweeps' about to end.
Actually having a 4th attacking move is nice since it'll give Kommo-o another option if it can't set up or was previously forced out. Resisting Ash-Gren's Shuriken's nice as well.
Hoping it gets more moves via tutors.