Alright, I watched all three of your videos.
And I have no idea why you keep moaning about harmony animations.
The only thought that seemed even remotely graspable is that the camera angles don't always show everyone who partakes in a harmony singing at once, but demanding that everyone be shown during a harmony is ridiculous! That was most notable in Radio Gaga, but both in Ghost of Perdition and Curl of the Burl the blokes opened and closed their mouths when appropriate. And I own 2 of those songs and I never noticed anything remotely close to being broken harmony animations.
I've rewatched the multiple harmonies parts multiple times too, so don't say that I wasn't paying attention or something.
Seriously dude, you're not seeing things that are there or making a huge deal over a problem so ridiculously small that it matches HMXHenry's post about that one guy who cried about the landing gear of a plane.