The Biker Scout's noggin falls off? That's lame. Think it's just an isolated issue with yours, or do you think they're all like that? The Speeder, canned Fett, and Death Star Escape sets are the three that I still need to finish off my bootlegs. I've just got the standard 3 (ANH, ESB, ROTJ) and the Han Carbonite.
As much as I dug these when they first came out, I KNEW I was in big trouble when I first heard that Medicom was going to start making the "real" thing. Now, like many here at JD, it's one of my favorite lines to collect!
As for the clear display cases, another area to look into is the model railroading hobby. They've got a lot of nice display cases that are similar in size and shelf space to what Scott's go there. Don't recall any good links off the top of my head for those right now though...