I've argued for a long time even a basic matchmaking system would be hugely beneficial. It's just no fun going from blow out to blow out, on either side.
Please, Bioware, take note of one thing: don't let people play games with gear. Don't let them queue with one set and play with another after entering the wz. Maybe the system should just track the highest gear level EVER worn by a toon for match making purposes, which would make the entire coding process much simpler as well.
im sure they have thought of that. it wont be just based on the gear you are wearing. probably based on what gear you have in your inventory also. maybe even on valor level as well.