Didn't find this with a quick search:
I'd like to see a variable/flag the server sets for which type of host it is running. For example Race/Drift/Other (i.e. cruise...), so people can filter the list by it. Personally I really would like to get rid of the drift/cruise/CnR/... servers on the server list, because I wouldn't join them anyway
I'm not sure about the horn thing, because I'm sure some people would abuse it on normal servers, for the rest, could hurt though, I espcially agree with the handbrake; it shouldn't auto-unlock or at least be an option to choose
IIRC it just displays a message box "Cannot connect to host: You are banned" when you try to connect to the server... not sure though, it's been forever since I got banned
Only if things stay basic. Try to do something comlicated and go through hell (or use an .ocx/module which some nice person created for exactly the thing you were trying to do)
Guess what, most of those were barricaded (i.e. banned from many servers) and tried to sell their licenses after. You're better of having invested the 36€ for a safe account