So I get that using a kit on a tool lowers durability by 75%.
But that doesn’t seem like it’s worthwhile, when you think about it.
Testing this in game with the iron pick, using the multiplier 1.5 for harvest amount.
So my iron pick is giving me 6-7 per hit at 1 durability each. So figuring this with the default 300 durability: 1,800 to 2,100 stones
My upgraded iron pick is giving 7 or 9 per hit (as 8 doesn’t seem to be firing), but the durability is 225, which means I’m getting: 1,575 to 2,025
The Simple Tool Upgrade is just completely worthless, going with these numbers. I imagine the base numbers would be 4-5 unaltered and then 5/7 for the altered, but the percentage should still remain the same.
So this, and probably all of the tool upgrades, need to be altered. Either increase the harvest bonus or decrease the durability taken away.
Currently you lose 25% of the durability, but if you change that to 10%:
Durability becomes 270 for the Iron Pick, which means at the low end you are getting 1,890 stones from a full run. On the high end of 9 per hit, you can get as much as 2,430.
So compare them.
Unaltered Iron Pick is 1,800 to 2,100.
Upgraded Iron Pick is 1,890 to 2,430.
It hardly seems game breaking.
Looking at the Advanced Upgrade and the Star Metal Pick, this one is far more worthwhile.
Unaltered Star Metal Pick gets 4,550 to 5,200 stones over 650 hits.
Upgraded Star Metal Pick gets 4,870 to 5,357 stones over 487 hits, assuming the 7 and 8 are buffed to 10 and 11.