The hope is that people buy VIP membership, but it IS a bit pricey, especially with sauna times that people can't always make full use of. I was VIP for the longest time. Until the industries became limited. (but that's another story). Having tiers for VIP is only inviting for whales who want VIP status or for land owners who automatically get VIP.

For the free playing people that are just starting or for ex-VIP members, you could make a little extra money and coerce players by giving them the oppurtunity to buy a bookmark, extra sauna visit, extra inventory space. Not full VIP status but on the way to liking the perks. It would spend a little extra $Pixel that wasn't being spent and players might decide to finally go back all in (again) on VIP.

Just a thought. You did have the free 3 day VIP memberships. I know buying an extra sauna visit for non-VIP members would be really nice.