I never understood why people farm trials for gear unless it's so they can get better at doing trials. Min/maxing isn't required for dungeons and most of the sets are pretty useless for PvP. No gear is going to make people interested in doing trials. You either do trials because you enjoy the content or do it for some other reason that isn't going to keep you there for very long. Also not really sure what this nonsense is about trials sets not being used, I use a lot of them including Moondancer, IA, VO, TFS, War Machine....
A lot of the trials sets go unused or maybe forget... but what if they were 3 piece sets instead of 5? Would it make trials more interesting for people?