I posted the rules for Fall 2010 something like 9 months ahead of time. I'm sorry that you just found out about the changes now.
I have no idea what to say that will make you happy. If it's any consolation, we changed the rules because you would have been laps off to a 21.5 lipo car with unrestricted speed controls, even with a gear limit. All the different power combinations came up initially because the hobby as a whole was going from brushed to brushless and nimh to lipo. Since there was going to be a clean break with the new motor and esc rules, all the "patches" were removed.