Spinners cannot be full speed in anything but the RW arena - you won't have Carbide or Nuts at full pelt. Axe bots like Thor and Terrorhurtz will be at max.

Flippers like Iron Awe are quite common at the live events - just accept that you will get flipped

Driving practice is a big thing and free - no different to cars, bikes, rc cars you name. Find a flat smooth piece of tarmac
I've been competing years - sometimes the bot gets broken, sometimes I break it, sometimes it stays in one piece. If I wasn't going to accept that then I would of built a model train set or similar.

T-shirts / uniform - I have no problem with that. You are a sports team so why not. Lots of places will put a logo on a shirt. Ian Thomas wife did alot of the RW shirts. We are lucky to have 2 EO's in the UK keeping the sport going between TV deaths!