Yeah, I had a feeling that Glitch World wasn't constructed very well and I plan on reconstructing Glitch World from the bottom up. The dungeon for Glitch World is much better. If you need help finding the key to Glitch World, I can post a video walkthrough for you.
For Arena 3, there is no different prize if you don't use the gimmick. I was thinking about making a later Arena that was Arena 3 without the cheat devise. I do like your idea and I'll think about it.
The golden tower is meant to be an optional challenge that will give you an awesome reward at the end.