Sorry about that. I was young and stupid...and drunk
This is why I think the concept really only works as a boutique, upscale hotel. Disney has no desire to build a "spring break" resort with pool parties, wild night clubs and the "individual acts of perversion" that come with it. There is no shot they build a hedonism type resort for adults to go to party. It really has no place at WDW. However, there could be a place for an upscale, adults only hotel. Something that appeals to older couples too, not just the 18 to 25 crowd. I think a hotel like
@roj2323 described above with an adult pool where you can grab a drink and relax and an adult lounge without kids is possible. I'm thinking more like a classy, sophisticated hotel instead of a drunk fest with a bunch of older kids partying all night long.
To get back to the original question of if it will ever happen...not likely. The only way I see it happening is if someone else foots the bill. Disney isn't taking a chance on something like this. They don't want to alienate their target demographic.