If populous wasn't a problem you could hang the frames from the drawer, and pull it out for inspection.
That is a sturdy looking box.
The bottom will need the beetle drop tray. but I would think Some wood runners to slide in a baking sheet would work.
You will have fun turning this into a hive.
Be careful if it is composite board though, that will need to be sealed really well or it will melt in the rain.
I know! This is going to be fun, right?
No composite in the body, though the top may be from the looks of it...but that will be wrapped in flashing and any seams caulked, so no moisture will get in there. I plan to take the face off the drawers, reposition the tracks to hold my bars and hinge the top drawer face so it can be opened for observation. I'll place a piece of glass behind that.
The bottom drawer face will be removed, reattached but shimmed out a little at the bottom to make my entrance...I want them to crawl up in the hive like they would if they had made a hive inside the siding of an old house. I'll fit a piece of shim to that entrance so I can reduce it and/or close it entirely when/if I need to do so.
That hive body is made out of some extremely tough stuff...not sure what the name of it is, but I have a partial sheet of it up in my wood scrap pile and that stuff cannot be destroyed by anything. I'd be surprised if I could even burn it effectively...might take awhile.
I'll likely make a drop door on the bottom so I can clean it out, or possibly the slide out sheet like you describe.
I too was thinking how cool it would be to pull out a drawer with the frames all hanging there for inspection...wouldn't that be neat?
Sort of like a filing drawer for comb frames....just pull it out, remove the "files" you want, push it back.