Did some thinking last night on organization. Feels overwhelming to rearrange the entire shop, I've be locked into the basic layout since the beginning, but now those restrictions are not the same. I think the path is to leave most things alone and focus on smaller improvements. More toolbox space would be nice, but on the other hand simply using the space I have more efficiently is a better first step. Having one item in a drawer isn't a good use of a drawer. I have a collection of blow molded tool cases that would be better off in a cabinet. Should also move all the woodworking tools to one location by the bigger machines, a cabinet would serve better for this also. So I think I should figure out what would work best for those things before buying another box.
Types of solutions
-free /cheap
-Homemade wood or metal
-big box store turds
-high quality used metal cabinet
-Other items that can be made into cabinets - server rack, file cabinet, etc.
For additional drawer space, a tall skinny setup with minimal footprint seems like the winner.
Another option is to buy one the the 'workbenches' with drawers as a base and place or build a cabinet with door on the top of it.