I'm only an occasional poster on the royal board but the ANL plus other stuff from last week has been really interesting.
I can't imagine how any of this will resolve amicably enough for everyone to reconcile down the line and rub along together.
I think the root of all of it is Harry believing he should be equal to William. Which makes sense in that he's the first generation where more modern social sensibilities are a factor. Plus I think as children, post divorce and post Diana death, an effort was made not to make the two boys feels different which in the long run was a disservice when you're part of a hereditary monarchy. Add in a marriage to an American whose country was founded on the rejection of royalty but has values rooted in the freedom to monetise everything, then it's a recipe for disaster.
They (or maybe just Harry) seem determined to try and have the HIHO they originally put forward. If they wanted to do charity far better to focus it in the US than trying to emulate a royal court with public appearances here in the UK and quasi royal 'tours'.
I think the ship has sailed for HaM being able to have very successful careers in the US, but I wouldn't rule out the kids. If they turn out to have any charisma or talent etc. they might end up with success in acting/modelling/politics or whatever as young adults. HaM have got things wrong for themselves but being the great/grandchildren of a Queen and a King plus the Diana connection is still quite a history. The Kardashians managed it with a less impressive backstory.
That said, I think their titles will actually be a hinderance in that respect. If they didn't have those they could go on to be successful Americans free of any sort of obligation to a country they barely know but still with an interesting lineage.
Just some random musings on my part. It all seems such a mess but despite all that time will march on, The Crown will likely rumble on and William will become King. So really this is all just noise at the end of the day, even if it is fascinating.