This change has caused several reactions in me.
The first is nostalgia. The Hoop-Dee-Doo theme song truly brings back childhood memories. I first heard it as a 5 year old back in the late 70's. Unlike "Yo Ho", "It's a Small World", "Grin Grinning Ghosts", or any other Disney theme park song (which can be easily be heard multiple times on multiple trips, as well as on CD and other music formats) HDD really could only be heard attending the show. Since I've only seen the show 3 or 4 times, the song has a very unique specialness that other Disney theme park tunes lack. I had been looking forward to taking my own kids to see the show soon, knowing I'd be getting a rare peek into my own childhood memories again.
And that brings my second reaction: sadness. The loss of this song, as minor as it may seem to newer Disney management, means the death of one of the few remaining original WDW experiences. It's on par with the closure of 20,000 Leagues Under the Sea, Mr. Toad, and the Swan Boats. Sure, only a fraction of WDW guests have experienced HDD than had experienced those other attractions, but its still the death of a piece of WDW history nonetheless.
And that brings me to my third reaction: surprise. I'm pleasantly surprised that HDD (the show and the song) has lasted as long as it has. It has far outlived those other attractions I mentioned above. It has outlived the MK's Diamond Horseshoe (and surely must now beat DL's Golden Horseshoe in terms of world records). Even among WDW dinner shows, it's brother "Top of the World" is long gone, and the "Polynesian Luau" barely resembles the original show. The fact that HDD has survived, unchanged, for 37 years is remarkable. Considering that it there is hardly any advertisement for the show, transportation/parking for off-site guests is ridiculously challenging, pricing is steep, and the theme is not exactly trendy, it is a sheer credit to the original show script that this relic of the early 1970's continues to pack 3 shows a night.
And that brings me to my fourth reaction: puzzlement. If the show has worked so well for so long, why permanently change it? (Heck, its in the title of the show! Even "Under New Management" kept the original Tiki Room song!) I admit I'm not well versed in the technicalities of the HDD copyright lawsuit. But when it comes to money, I imagine the biggest expense to Disney would reimbursing the copyright holder for 37 years of back payments (assuming Disney was at fault). I would imagine purchasing the rights for future use of the song would be a much less significant expense. (Of course, the song is only as valuable to the copyright holder as someone is willing to pay for it. They could have tried to gouge Disney unnecessarily by charging excessive fees for future use. Disney could have countered by eliminating the song entirely--which it appears they've done-- which means the copyright holder gets no future royalties. Maybe that is a strategy to bring the song back, by playing hardball to negotiate a fair price that makes the HDD show still financially feasible for Disney. But as one poster mentioned, this change is being treated as permanent). Still, I'm puzzled that Disney would be hesitant to spend money to keep this successful show going for another 37 years.
And that brings me to my final reaction: acceptance. I was very fortunate to have attended HDD as a child, and that song has dear memories for me personally. But as I acknowledged above, it has a fraction of the audience that other Disney attractions have seen, and some of those attractions have become extinct. A child, teen, or even an adult seeing HDD today has probably never heard the HDD theme song, and even if they did, they probably don't remember it. I acknowledge I'm in a very small minority. I also realize that live dinner shows like HDD have a relatively slim profit margin (compared to, say, a DVC that could theoretically be built on a bulldozed Pioneer Hall site). It would not make financial sense for Disney to pay an insane sum just to hold on to one song that most people probably won't miss anyway. And from what I hear, the rest of the show is exactly the same as it was when I saw it the first time in the late 70's. I'm sure my children will still love it (and in fact, they could turn out to be very nostalgic, sad, surprised, and puzzled when Disney restores the original HDD theme song 20 years from now, because it won't be the same one they remember as a kid!)