Hmm . . . I'd be really careful with the pedal changes . . . if you were really desperate to change things, I'd try to make the accelerator match the brake, and leave the brake alone . . . if your accel falls off ( as long as it doesn't fall under the brake ), your a lot better than if your brake falls off
Even accidental WOT isn't as bad as no brakes, at least you can turn it off. . .
Otherwise, perhaps a more interesting suggested application for your speed limiter mod, would be to use it to make a shift light. If you link it to the tacho instead ( i think it uses a similar electronic system to the speedo ), and get it to trigger another circuit ( i.e. a led or something ), at a certain frequency . . . . Could be a *lot* more subtle than alot of the ricers... was thinking of doing this one myself, but haven't quite got there yet . . .