Not to get into an East-vs-West battle, especially over an attraction that is not even complete yet, but Tirian probably has a point.
Other than the exterior building (which for some reason the New Orleans Square version is usually preferred), the only thing DL's Mansion had going for it over WDW was better upkeep, maintenance, and updated effects.
But now, it sounds like WDW will have everything DL has, including its quality, but also much MORE.
* A first-of-its-kind 3D sound system in the stretch rooms and Doombuggies (not just a clean digital soundtrack like DL, but one that actually plays tricks on the ears and brain)
* The enhanced gargoyles and bats (will these be audio effects, or visual, or both? Either way, its a WDW-only "plus")
* Master Gracey's portrait in the foyer (unless it was swapped out during rehab)
* Sinister 11 portraits in the boarding area (possibly)
* Library Scene
*Ghostly Organist scene
*New Staircase
*Enhanced Floating Leota
*Enhanced Bride
* Little Leota's own room (versus the moving sidewalk at DL which breaks the illusion)
It's easy to imagine this refurb will raise the bar on all HM's. But it's probably better to keep expectations reasonable.