Return of Reckoning

All Zones being full is highly unlikely, but it will force people to go to less populated Zones

So this is something I have been wondering for a while.
Is it possible to restrict RvR Zones to house a max of 250 people on either side?
When both sides have 300-400 people the servers seem to buckle under the pressure making the whole zone unbearable.
There are a lot of people that go to an RvR ...