I honestly enjoyed grinding the Trust NPCs. It was good exp for me leveling my alt jobs (got my Amaro mount thanks to it), great for skipping DPS queues, no nagging from other players for not knowing my job (I HATE melee classes and only leveled them for said mount), good gear for the leveling grind and when I was done with the gear I desynthed it all for my desynth levels, and I got some really rare minion/music drops that I didn't have to roll against other players for. I can see the argument against it, and certainly there are fixes they could implement to make the feature more appealing to a wider player base, but my experience with them was largely positive. Also I love the Scions and seeing their extra dialogue/how it changed with different party makeup was always a blast for me.

I honestly, truly, wish they'd implement trust for Trials. At least for the ones that don't explicitly "summon champions from beyond the rift" or have you "lead a team of adventurers" into battle. The ones where you canonically fight the trial with the Scions, in my opinion, would be BOMB to have trust access for.