I personally liked how faction stuff was in D1. You chose a faction from the 3, and then just grind it out while youre doing other stuff. Kind of like another exp bar. Then when you reach certain milestones, say Lv10, 15 Lv20 with faction XYZ, it opens up a quest chain, and when youre done you recieve reward. The pinnacle reward for the end could be some faction type armor, D1 had exclusive ships. They could have a vendor selling fixed rolls with level requirements, and once that lever req is met, you start to get random roll drops in the world, or other activities, etc...
I never liked the faction rally shit because it was time gated. Essentially a week to grind out crap. I would like to see faction stuff be more of a season long grind that just levels up in the background, like it was in D1.
Also on the Trials thing, I never really did trials other than fucking around with randoms on LFG. Im just not good enough in PvP in this game to compete at such a level. I get all nervous and start fucking up. But still I liked watching the streamers do it all weekend long. People like Kraftyy, WYL, etc...