I'm in the midst of a renovation of my office/model display. I pulled the IKEA shelving units out and removed the previous halogen lighting. Heat was the devil; the halogens generated more heat than I expected when I first set it up. I equipped it all with new LED lighting strips. At least 50% better light, 80% less electrical draw, 100% (so it seems) less heat generation.
Also installed IKEA glass doors. Dust was the devil. These hinged doors are fitted for these shelving units and install quite easily. They are designed very effectively for 3-plane adjustment to seat nicely. They open and close smoothly. To further defend against dust, I've installed foam weatherstripping between the doors and the shelving units as a seal.
Now comes the hard part: Cleaning the models and restocking the shelves. Just getting started.