The funny part is, we had that in Shadowbringers with Dragoon. If you hit the last positional, it proc'd Raiden Thrust, which was a pretty great reward for doing your positionals. Naturally, they changed it and made Raiden Thrust guaranteed, so that concept came and went.

I'm on board for adding a bit of extra visual feedback for correctly hitting positionals, but I wouldn't count on the devs doing anything about it after 10 years.