I think that's a decent idea. I'm going to build a new layout for KZ and try again (or re-build my finale?), where maybe a fan sucks the players up into it slowly or similar.
What if it was koth but instead of a time until your team wins, it was a number of suicides, but every time you lose control of the hill your suicides would be reset, meaning that if you all didnt get in the pit fast enough, or if you didnt have someone protecting the point, you wouldn't win.
It could also have a negative effect where x suicides reduces the cap timer by x seconds, meaning that the closer you come to winning, the more vulnerable you become to loss.