i've thought about adding other levels to other minor skills like panning, farming, and maybe even digging (since we dig a lot!)
it would go like this
farming- must water plant in x amount of time
- can clear weeds to increase plant growth timer
- instead of buying patches of soil you buy a whole new garden that is only meant for farming
(so people can actually have furniture outside their house instead of spamming it with patches of soil)'
- there can be different kind of soils that help with certain plants
- higher levels unlocks more plants
Digging- different shovels get you different things
- can dig relics so you can make more money from digging
- there can be a shop that converts ur rocks (from digging) for items/hats/etc
- higher levels unlock more things
- can dig up minerals that you get from mining
(must have matching mining level)
Panning- the higher ur level the higher chance of getting gems
- can get minerals that you get from mining
- different pans get better stuff
but again these are just ideas and its easier said than done!