I liked the sort of casual FPS style of combat. Unfortunately, the game didn't feel finished or focused enough. I really didn't like the environments/design and didn't get into the quests or storyline. There were also some seemingly basic bugs that were never fixed afaik. The crafting and inventory/item system wasn't really well thought out and every change they made seemed to make things worse.
I'd really like to see more scifi MMOs, but TR didn't really hold my attention.
I was looking forward to Imperator for a long time, until they cancelled it for Warhammer.
Imperator
Blackstar is another project that looked good, but lost it's publisher (NCSoft).
Blackstar
I've been following news about the Stargate, KOTOR and Star Trek projects, but I wouldn't mind seeing some new, original, unlicensed storylines for a scifi MMO.