I've seen no real point in it.

You don't get anything from it, unlike with Squadrons, and the only time I use Trusts is either doing the Storyline again with New Game+ or during the original MSQ run through (of which I rarely used them as I like doing them with other players more).

Leveling them gains you nothing really, unlike squadrons and sending them on missions in your absence. And it takes a LOT of going through the same dungeon over and over again to level them.

They never should have made it required to level them to use them normally because its kinda pointless.