I don’t know why this is surprising to anyone lol. The SFX to “new” diamonds were a result of HVS + AG, now that it’s just AG, we’re probably not going to see them again unless the team expands. Same with new characters, kit reworks or even Guest Stars (thank god). Mad Malice doesn’t have any quirks (iirc her palette and flame was ripped directly from 2E), Cyclone doesn’t have any quirks and the next dia is probably not gonna have any quirks.
So far, most changes to the game have been inconsequential (and arguably bad, but that’s an entirely different topic) since the AG takeover and it’s been about 4-5 months since then and unless the 8.0 update really knocks it out of the park, I think it’s be reasonable to assume that SFX and huge sweeping changes will either cease completely or take a significantly longer time to come out than before.
Still hoping for the best tho.