Really happy to hear you had a good time with the game!
I agree that having an alternative animation at least for the perfected version of the cocktails would be really neat to have :)
When we were balancing the cocktails we didn't want to repeat cocktails of the same difficulty so we treated it like a puzzle game when it comes to progression (and topped it off with the randomized one).
By now there is some ideas floating around of how there could be additional cocktails, but it would require adding some new features.
It's a big MAYBE from the art department until someone from the coding side gets excited to add to the game ;)