Redo the Tools so they function similar to PvP finishers. So as you purchase Gem tools they would unlock & the vender or or other types would stack.
You could check which one you wanted each individual toon to use & not have to move them back & forth between toons.
I own multiple types of permanent Tools & would want to “unlock” others.
As for now you have to figure out which toon you left which tools.
other options are take up shared inventory or back space.
This idea of changing tools to be similar to finishes may have already been kicked around but i thought it was a good idea & could use some discussion.