There are 9 attributes. 8 attributes scale more or less fine for overall industry progression and there is Strength for mining/metal etc.
You have to have separate character with STR rush otherwise you won't be able to mine at the deepest available lvl.
Mineholes/Mining rush compared to other parts of the game is madness.
I can easily create one main character which will be able to perform almost all other tasks "fine", maybe not the best but fine.
For mining it's required to have specific miner character which is bad because it's another alt.
Please consider for the next world. I know you like Dwarf Fortress but going deeper shouldn't require separated character for "casual gameplay".