I have a question related to one of these: When I think of destroyed buildings in Renegade, I don't think of total rubble, I was thinking more along the lines of having parts of the building collapse, for example the hand on the HoN could crumble, the sphere come crashing to the ground, and maybe a corner crumbling off. In other words, not total destruction, just enough to let you know it's dead, but leave the inside areas free to roam.
Do you think you'll do something like that?
On a side note, from what I know about Unreal Scripting and mapping, disabling spawn points and purchase terminals when a building was destroyed would in fact be very easy. Though I totally agree with your reasons for not deleting them, I just wanted to throw that out there.