Giving Starliner Vast Hangar should actually make it pretty interesting outside of transporting crew.
Comparing that to the Heron...
Huh. Half price for about half the ship. Two hangers versus three and a useful ship system, lower speed, lower OP per hanger, no medium mount...
Compared to the Condors I generally don't use, it's slower, slightly tougher, has more OP, again no medium mount, but has the same DP cost. Could carry ECM or Nav Beacons more effectively, counts for Escort Package.
I wouldn't replace my Herons with it, but if I was hauling around a Starliner anyway for the crew capacity, I might be willing to take it into combat. Probably competitive with Condors.
Then again, given the specifics of how post-combat crew recovery work, I might only be willing to do that if I was
really sure I could keep it from getting popped. Or had brought spare Starliners.
I don't think it would be broken, anyway.