The technical aspects of the DLP version are superior. However, I went there with then DD3, and mom and dad remembered the WDW and DL versions, and so we thought it would be no problem. But boy were we surprised. She hated it right from "Mai, ou sortier?". Much darker with more goulish stuff.
My personal impression is that it wasn't "Disneyesque" enough. That could simply have been achieved by having a bit more whimsy all around, and eliminate some of the corpses sitting in the corners, which really add very little.
I hope the refurb doesn't go too far. I love the Disneyesque feel of the old HM, and would hate to see that lost. Technical updates, lick o' paint, full color illusions, update animatronics, all good ideas; but leave out the blood and guts, and the scarier narration.
By the way, I love the instruments, even though they're a bit cheesy. In fact, in some ways the cheesiness adds to the experience. Corny comic relief factor IMO is cool. Relieves the tension. I remember giggling every time I went by.