This may have been suggested before and I have cross posted this in 18.1 forum.
How about making SL a quest for Froobs? - gives a limited time access which has to be renewed every 2 weeks or so, gives them an incentive to pay/play (losing perks etc might be a great motivator ).
Make it per zone as well we already have access nanos for ely on paying creds
Would this work or is it even possible?