Display Decisions...

So currently this is how my diecast displays are:

Various larger scale models

Muscle Machine/Jada Toys. This display gets blocked when my door is open.

Photo area. I'm always moving stuff around and rearranging to make room for pics.

Shelf on my bookcase dedicated to my JDM collection. Tiny models in a big space.

So how should I go about fixing this mess? Should I get tons of cases for my 1/64 cars or should I get creative and find some playset (Tomica Honda dealer/carwash/mountain pass) and display cars "in action" which I can also use for picture taking?