Re: pic: My Rendition of Emperor Swerve
There is a lot to talk about on this, I like the thoroughness in your design.
Probably the largest thing to comment on is the steering setup; Although I am an engineering student, it was pretty simple analysis to show that relatively small bearings (regular roller ones at that) which are very inexpensive are more than robust for the steering setup. If you have an engineering mentor with a mechanical background (or for a rougher analysis, anyone who has done statics or could do a halfway decent Free Body Diagram) they could thoroughly show this concept to you. OR, you could just take my word on it.
We initially looked into large bearing rings and similar setups, and they're just a lot of parts/complexity for all the ways we had tried to implement it.