RWD would be perfect, but the platform wont support it, i wouldnt want the MS3 to be AWD, then it'd be heavily compared to the STi and EVO, I dont think Mazda wants those extra attention yet, and I cant really picture this is the way Mazda would like to go (Turbocharged AWD rocket). Just keep making balanced RWD cars, the MS3 and MS6 is the answer to the market, when everyone complained Mazda didnt have a straight-line performer. Good job to Mazda for listening and giving us these nice cars in such a short time!
Now that they're finished with that task, I forsee they'll place the resource and focus on developing RWD cars and make further use of the Mazdaspeed performance brand.
I'd like to see a lightweight/cheap RWD car next, Kabura concept(MX-3, RX-3) and give us a rotary supercar(RX-7) in the future!