Same (and Angel). I wish I could go back in time to see the Hellmouth Haunt from 2000! Even disregarding the Joss of it all, though, Buffy being owned by Disney now has solidified in my mind (even though it likely never had a chance anyway) that it'll never come back to HHN or any event like it, especially since they seem to have zero interest in the IP to where they won't even give it a proper remaster to make up for the terrible one Fox gave us.
All these awesome legacy IPs -- like The X-Files, too! -- that Disney now owns that could make for awesome throwback/anniversary houses and they're just sitting on them like a dragon and its hoard, which sucks when it's not like they have any desire in getting into the haunt game to capitalize on them.