As a Premium or Premium Plus member, I would like the option to choose a Linden home or use the credit against the mainland tier, as we already do. But I would ALSO like the option to use that credit toward the private community I prefer to live in and support.
For me, the main reason I am in SL is because of the privately held community of the Confederation of Democratic Simulators (CDS) that I've been a part of for the last 16 years, and I would really like to benefit the CDS with my Premium Plus instead of having a home or land somewhere else that I don't really care about.
So, I propose that something be worked out for this purpose. I'm sure other privately held communities would also appreciate the support of their members through their Premium or Premium Plus account benefits.