Matt Neil has mentioned in an interview or two that the next BTCC Civic could be RWD because there will be a Civic road car that is AWD and the rules would therefore allow them to run a RWD setup, though he neglected to say which road car.
Honda have said it will be FWD, unless they have a rethink with the new arms race that is going on. The next Megane is going to be 4wd and 5 door I've read on the rumour pages, so if Honda don't move with the crowd they could be seen to be being left behind again. Think FN2 and its rivals power outputs at the time, and you'll be at the 10th Gen vs Ford/Renault/Merc/VW/Audi/BMW (X-drive on the M140i).
4WD could take away some of the fun of what a Type R is about, but two things stick out. Like you say, FWD and that power seems just silly, and the second is we all said that turbo will kill the fun and it works just fine IMHO.