It's super cool that you're Native American - what nation are you a part of? I was in Oklahoma City recently and heard a language being spoken that I was very unfamiliar with... turns out the family was speaking Shawnee. I just thought that was so cool that they were keeping that language alive, even using it publicly so their kids would continue to use it.
I have not heard of any changes coming for Haunted Mansion. One of the things to consider is that there was a very large list of modifications being recommended by the Story Matters Group. However, that list does not seem to be on the fast-track for changes at the moment. Because of that, I don't know how many of the recommended modifications are coming down the pike soon -- next week they might all be green lit, or very few might ever be approved. The relative silence about Splash Mountain over the past months would seem to indicate Disney is aware that some modifications are likely to cause more turbulence than they'd like to continue moving into. So will recommended changes like Peter Pan come to fruition? Almost certainly. Will recommended changes like equitable female and minority names on the Main Street "credits" come to fruition? That's harder to forecast now because of the slowing of the roll out.
For sentimental reasons, I'd like to see The Wuzzles be available. That really was the precursor to shows like Gummy Bears, Goof Troop, Duck Tales, etc, and almost nobody remembers it. It's a neat little show, even if it was ultimately a flop financially.