Seriously, everything on that end of the strip can go. Blow up and start new.
I've lived in Vegas for about a year now and my visits to Circus Circus have always been... unpleasant....Yeah, that's the word. Adventure Dome is a good idea but with such limited space its only a matter of time before the whole thing goes stale. And its already there. The whole Circus Circus has deteriorated (and was always pretty tacky) far beyond repair and its time they salvaged Canyon Blaster and toss the flat rides and let Wile E. take the Acme TNT to it. The beds in that place are like sleeping on Soda Cans..no joke.
Note: I'm really interested what they may do with Star Trek the Experience now that the movie is a Hit. There's the rumor that it will move to Neonopolis at the end of Fremont St. But they are probably just going to reopen it at the Hilton rather than move all that junk over. I'm glad that this is going into consideration seeing as the Experience is the only high end Attraction in Vegas and I enjoyed it very much.I guess it also depends on whether or not Cedar Fair will come back to host. Also, I'm now old enough to enjoy a goldfish bowl sized, dry ice infused, alcoholic beverage from Quarks Bar...should the specialty drinks return as well.