Ah right that's actually a really interesting idea, i would say make the mines different from prison and opprison. I'd say they shouldnt go from A-Z but instead there should be different mines like "The wooden mine" and stuff so that the blocks can be used in both building and to level up. The job idea sounds interesting but it shouldn't be limited to only 1. Maybe upgrades could be added instead of these which for example gives you "infinite haste 1" or maybe "Rent value increased by 5%". These upgrades could make things easier. If you guys decide to add a survival world it should be mainly for collecting resources and it could be reset every 2 weeks or so depending on how active this gamemode is.
OMG amazing idea! <3 Thanks for the credits, I would like to see some updates ^^ Hope this time mr big boss is going to check it faster than our previous attempt - Raba