I'll admit - despite the fact GH holds a special place in my heart, I looked at the vaulting content and just didn't see the draw in it. Maybe random content for random content's sake? Sure the game is a bit silly throughout, but sometimes you need to see it actually "going somewhere".
I've always hoped that GH would start to implement an overall plot beyond "if it moves, screw it", and of course the huge humor factor. Not to the degree that some games take it (blanking out on the one AVN where one of the LIs was suicidal and died via a great story), but at least something that was interesting and showed plot progression, not just relationship progression. The garage seemed to be moving in that direction when it was first seen.
I may be in the minority here, though I'm also guilty of wanting that fap-factor, so it's a double-edged sword for me saying it. But a slightly more involved, over-arching story would be great. We still have roughly half the game to go, right?