After playing STO for so long, the judge's robes are definately the way to go on Q if there aren't future releases. Iconic.
As for a subscription club, I feel like a PO price isn't too much to demand, and you could cancel at the regular loss of PO, but as someone pointed out, it might make more sense to do a subscription for each series rather than all releases but it seems easier to implement 1 rather than multiple, so I suppose it would depend on the business capacity. Still, it seems to me that a subscription for the whole shebang where you would forfeit the PO if you don't want a figure should be juicy enough for a business to seize upon if there is enough interest.