I think this is a great idea and rewards people that have created parcels that are for the community of Second Life where it is for enjoyment of all where the parcel owner isn't making a profit but rather doing for the joy of the community and the creation. Example the Calas(probably have wrong spelling) Parks.
Also, it's a great idea to reward loyal customers of Second Life. Maybe there could be an agreed-upon criteria that Linden Labs could live with without it affecting their bottom line but still a nice reward.
I know personally, I am disheartened the more the good sims are abandoned and gives me less incentive to log in and continue here so it's a good idea in my view to reward sims like this with some sort of incentive/discount to keep them around.