FreeSynd

I might be nice to have a building's roof become
transparent when one of the player's agents enter the
building. I can remember being fustrated at not being
able to work out where an agent had disappeared to
inside buildings.

In a similar vein it might be an idea to make whole
sections of building become transparent when the
player's agents are hidden from sight.

Anyone who's played Diablo 1 and/or 2 should know what
I am envisioning.

Of course all of these are certainly post-1.0 feature
candidates.