Why can't we have an undo button again?

[TheGreatErenan]

There's no more room on the UI for another button. Besides, Adam drew too many buttons already.

Seriously, though, there's no significant gameplay problem with an UNDO button provided it can only be used when the FoW isn't affected, so in theory I agree with you.

There are more important things on my wish list right now, though, like a confirmation dialog for the DONE button. So if OML was going to work on something, I'd rather it be that.