You can't just get rid of a whole mode like that, especially if it is popular. That would be dangerous to the numbers of the amount of players that play on this server. I know I wouldn't play it if there weren't any KOTH maps.
This is a great way to see how changing our servers can apply to our little filling problem, all Spidey did was change stuff that we didn't like about VM and added new features to make it more fun, which IMO is a very interesting and awesome idea.