I know radios are here to stay and I think they should stay, but what would you think if they were set up as follow (Taken from my post on the 'Time bonus' thread).
I think it would be really really really interesting if each rider was given a radio with different channels, each channel for a language. The riders would be warned by the race organizers through translators and what not about dangers on the course, time gaps, etc. All the organizing for the chase and such would have to be done by the teams on their own without directors.
During TT's the radio would be between the rider and the team car.
I think that would be interesting. If the reason behind radios is to warn riders of dangers, then this would satisfy that need, while forcing the riders to think on their own, making it a rolling game of chess where the pawns are king.