I know that they kept trying to make plans and do something with the land. I found this proposal over at the UNLV architecture library site for a new mixed-use project: http://www.library.unlv.edu/arch/aia/awa2004/ub03006.html

I've recently managed to snag a couple of chips from the original casino from the 50's. From a historical perspective, they're well appreciated by me. *gryn*