This would be a bad idea in my opinion. You would end up with lots of empty rooms open 24/7 and people spread too thinly amongst the rooms. At the moment there are approximately 10-15 rooms open that have 10+ people in them at any one time.
Giving people the option to spread themselves over more rooms would kill the social aspect of this game as it did in RLC when everyone had their own club open 24/7. The only people in the vast number of clubs was the owner and possibly one friend to keep them company. Almost everywhere became a ghost town.
Be careful what you wish for.