The present control through the lines using U/Tronics units, for example, is both legal and effective. There are people using this in Carrier (and even more so in Scale) and it works for them. The real downside of this is the requirement for insulated lines which add line drag and weight to, as well as reduce reliability (mostly due to breakdown between the lines) of, the system. Allowing R/C would eliminate the need for insulation on the lines, a huge performance improvement. Thus, it would obsolete present through-the-lines electronic control systems used in Carrier competition, as well as, to a lesser extent, those used in Scale competition. How about using an R/C engine shutoff and retract control in Stunt, too? Would that become legal? (I don't know the stunt rules, sorry.)
Now, suppose I were to develop an R/C system with, for example, control of the flaps so that I could have flap position variable, changing between going upwind and going downwind. Really easy to do with R/C, (or with through-the-lines electronic control, but then I'm stuck with the draggy, heavy insulated lines.) If this flap trick really works well, then I have obsoleted all the three-line systems as well.
I think I could enjoy working with the R/C link for C/L sport, but the inclusion of R/C in C/L competition has consequences which could affect the events in adverse ways. Caution here would be wise.
I would also warn about counting on the collective wisdom of the CB Chairs that would vote on a General rules change. They have made some spectacular errors in the past when votiing on changes in general rules that do not bear on their events. They are generally (but not always) willing to listen to comments from people in other events. So if this were to come up as a general rules change, we would need to communicate our concerns to the C/L CB Chairs very clearly.
Pete