A suggestion I'd like to give comes from ideas taken from the "Plex" currency on EVE online for the concept of trade of subscriptions, but approaching within this medieval/rpg/sandbox genre as Wurm Online did, where you could get in and play until 20 skills max. This way you'd be able to get into the game and farm. Make some money with resources and buy the subscription from other players. For SV it wouldn't change much as they'd be paid the same way, but by a third person..