I have noticed two problems with Trillian on my EVO 3D, the first I've already reported via support.
1. Notification color selection does NOT change the color no matter what you set it to, it's always green.
2. The sound selection seems to get lost whenever rebooting the phone the majority of the time. I have imported the "message-inbound" sound and put it on my SD card so Trillian sounds the same on my phone as it does the PC. It never lost the selection on my Epic, but on the EVO 3D it does during reboots.
Add-in: It would be nice for pro-users that past chat history automatically displays when opening a chat with someone. I don't want to have to hit menu and then go look at history. Make it the same between Windows and Android. Symmetry is simplicity.