The way armour class and weapons work is indeed cool (do we know if ess/vit do anything on weapons yet though?). Food too.
I feel like jorb and loftar just didn't quite complete the system. You could easily expand it to other tools, it might be fun if, say, sub was the only thing that mattered for mining power, but vit meant you used less stamina, and ess meant you mined faster (this particular idea is overpowered, probably.) I think with just a change to how picks work everyone would be considerably happier.
I'm not sure that q nodes are *that* rare on lower levels - what is rare is getting significant average q nodes. If more things had effects that just depended on one of the qs, it might be more interesting.
The livestock do indeed seem super harsh - I'm not sure the % fields are at all fun, I get that we are supposed to be able to raise different lines for different products, but with the 3 different qualities it is indeed just too much, and you need a lot of animals to have a decent chance of raising the many quality types you need for each line.
Personally I don't mind slower q grind, if its possible to overcome it with trade and stuff (which would be easier if everything relied on the quality components rather than the average). But thats tricky at the moment, in the current lawless state of the world, and with how wagons can't use roads :p