Mine would have to be a SSF checkbox on creation that would allow the other 3 storage tabs to be used for normal storage without being shared. Bit of a pain emptying those out between swapping characters to not mix items together.
Would also be fine to simply lock out those three tabs.
Anyone else have any thoughts?
Don’t feed the troll guys. 
Seems arbitrary when you can just have a mule?
True, but most things are that fall under “QoL.” it’s what sets QoL apart from “character power.”
The nice thing would be not having to mule/unmule every character swap.
This also wasn’t an issue in LoD single player. As effectively all characters were by default SSF. More of a returning of a remove feature.