Since they took the name from FFXI I assumed they had some sort of similar intent with the Trust system, but I guess not. In FFXI they just match your ilvl, they don't need to be leveled at all.

This decision seems like it could create future problems. Like what if I never touch them until 6.0 comes out? Will they be auto-leveled for the new dungeons? And then deleveled again? Or will I have to level them to use them? Is leveling your Trusts supposed to be content?

Expanding the Trust system seems like it could have been a good solution to Castrum/Praetorium or other old content, but deleveling them to 71 seems to imply SE has no plans to expand them to anything else.