If it's a full ban, that's a step. The ban the UCI was talking about a couple months ago was silly - to only ban riders talking to the DS. It would be better to have that backwards, or for the riders to be able to get info from one channel from race officials.
As I said before though, it's not so much the full radio ban, as it is the immediate availability and transference of information to the car, such as time splits, GPS tracking, even rider wattage or HRM information, etc. That is what allows team cars to factor in exactly how much energy for riders to expend, and exactly when to start to chase down breaks or counter attack.