We would all love to see the battlefield servers full again but that will not happen till there is constant support for the servers and there lies the problem, if you can guaranty 6 people every day to start the server up at least 2 times a day from different time zones then it just does not get started.
I myself am guilty of not playing for a while but that's only because I seemed to be the only one wanting to do the job that needed doing and i cant do that on my own, sitting on a server waiting for 5 more people for hrs at a time is no fun for anyone.
I would love to see them up and running again but i don't think it will happen in my opinion without the support I'm afraid.