I agree that the Huntress is the most improved of the splashes. As for the Rogue, I agree that his splash is the most generic, but woudln't something liek an eyepatch or scar only worsen that?
As for Trinket, while I do want to keep making sure they're all viable, but people are definitely upgrading them. It's very dangerous to assume that the way you and people around you play is how everyone plays the game.