I remember playing a similar server, but there were no pushbrooms, it was a puzzle challenge race ordeal. I guess the beauty of throwing pushbrooms into the fray is that you get to be lazy as hell and just use default builds instead of actually making your own suitable maps. Most of the time there's only one way to the top which is ALWAYS guarded by some ass (very noticeable on SPO castle, extremely frustrating) and at the top it just becomes a generic pushbroom DM.
I understand that taking out the pushbrooms will require you to think, which is hard, but, hey