We know it's easy enough to link buildings horizontally -- wings of a building, for instance -- but what experience to people have with linking a parkade to a tall tower over?
And if you want the whole thing in one drawing set, I expect you'd have to have duplicate levels and plan views in the host file so that the plan views in the host file can see the annotations from the linked file. Not a big deal unless you have to change the F2F heights, in which case you'd have to edit level params twice.