Sounds good...My opinions are...
1. That would be classic, don't set them on an island though, put them in the middle of the ocean, and every time they try to spawn it drops them there. Even the crashing of the game would be sweet, cause they don't need to be playing the game. If you would like something even more drastic pm me via www.usmsquad.com on our forums. My idea is that people who hack especially in games should never touch a keyboard. Let alone play the game.
2. Hopefully this client you are working on would be apply able on servers and automatically apply to the players computers rather than everyone have to download the client in order to play in the server. This would become a problem IMO.
I believe there are worse things than being banned on servers. And since most of these cards claim they cannot be banned. Let them try to swim their way back to shore before the game ends, or better yet do crash their games for them. Once you get this tool working well I will help assure it gets applied to all popular servers. Hopefully you can come up with something to do about wall hacks too, I'll ask around. On USM we have a few script kids so if you think you may need some help just let me know TS IP is ts.usmsquad.com:8767