The absolutely required mod is the one toning down the number scaling. It improves the game by a factor of ten.
The other I use is the permanent Spirit Vision. Not needed, just a QoL, but definitely a good QoL.
I think the game is incredibly easy on everything but Tactician, so I cannot imagine a number scaling mod to be 'required'. With a 94% approval rating, I don't think most people have a huge problem with the scaling.
But I can definitely get behind permanent Spirit Vision. It's a huge QoL improvement. Bless being Free would also be delightful, so I am in agreement with the OP here. And of course, my personal choice, the No Trash Items in your hotbar has been absolutely critical to me.