Now that we've addressed the day 23 exploit, we may want to reconsider the buildmany/destroymany idea.

The more I think about this, the more I realize it's a bad idea. If we put in this function, it'll only encourage people to think in terms of "lots of bases", which we don't want to do. During normal play, you would only build or destroy a handful at a time, so I don't think it's worth the GUI space or the programmer effort.