To be honest, I have grown less averse to the idea of them reusing elements from the previous iterations.
Those who remember the earlier debates on Duel might remember that I was an advocate for considerable change to the ride, and I was highly sceptical of the success prospects of a nostalgia-driven Haunted House "revival" that reused absolutely everything. Originally, I was quite against the idea of significant reuse of previous scenery or any significant reliance on the minutiae of the old HH.
However, I must admit that now the park have made it abundantly clear that The Curse at Alton Manor will be a very different proposition to either of the previous iterations, I have grown significantly less averse to the idea of some scenery reuse. Watching a 5K POV recorded by Attraction Source made me realise that there are actually some really nice sets within the ride, and seeing as those sets are likely to be put to very different use within the refurbished attraction given the storyline that the park has hinted towards, I see no reason why some sets couldn't be reused successfully within The Curse at Alton Manor.
Personally, though, I see sets being reused rather than props. Some of the sets in the ride were still genuinely really nice, and easily transferable to any haunted house-style ride, whereas I feel that the props aged more quickly than the sets, and at face value, few of the props within the previous ride (if any) would appear to fit the new storyline. Given that The Curse at Alton Manor appears to be vastly more story-driven than either of the previous two iterations, I think that is an important element to consider.