Ok, nothing to see here. This is just an idea. Move along now.
Harvest Mine is a game where mining is deliberately hard. Farming and trading is the easy path to success. Based roughly on Elite and Harvest Moon. Player will farm and travel to villages and trade with NPC's. Mining with a pick will use stamina, axe will use stamina but not as much as the pick, Better equipment will lower stamina requirement. TNT will be available but be expensive. Shovels and walking will not use stamina but movement bonuses will increase with building roads. Not a survival game. Injury should not kill but incur large stamina and movement penalties. Players should be encouraged to sleep at night or face long periods of running away or protracted tedious fights with wolves,
Trade should be simple, like in Elite. minimal number of things to buy and sell. Most NPC's should buy and sell roughly expected quantities of things within roughly expected prices ranges. Although an equivalent to Animal Crossings 'Stalk Market' could be fun too. Trying to balance the risk/reward would be tricky. AC time limits the availability to buy and sell.
Stuff I'd like to use.
amtmg
Paths
Stamina
Breeding animals
kpgmobs as that has a horse and wolves.
Farming
Fishing
Bees
Adventure Game villages Trading and NPC's
Considerations
Things should happen in the world when the player isn't there. e.g. growing & NPC price variation. This shouldn't push to much load on the server.