Hi all! RR2 dev here. If you all have any questions about the game, please join the The official Robot Rumble 2 server!
People will answer to all of the questions you have, plus it's a nice community.
Hi! Atm the game is undergoing some changes. Premade bots are gonna be done in the future. At the moment you can join the discord and in #botfile-sharing you can find user made robots. There are also tutorials on building bots.
I remember having the similar issue once, i think i cleared the cache in C:\Users\USERNAME\AppData\LocalLow\Nerd Island Studios LLC by deleting data, and reinstalling the game (if you had any bots, in the Robot Rumble 2,0 folder, there is a Robots folder which contains bots)
1. I doubt that they can use the bots you said because they are under the RW license, and they would need to acqure the rights which is hard
2. I honestly would like that, maybe it should work like Bot Builder?
3. Uh they will fix it most likely after the physics rework
4. I also experienced that which is weird