This demo is inferior to the first early demo although it is functionally, pretty much the same game. The first demo, while not perfect, had some really good qualities like the graphics and music. This game is more like an expansion on that demo, but with some worse qualities.
The graphics are improved upon, and they still look really good. Unfortunately, the music from the first game was changed. The music from the first game was deep and atmospheric. This music is kind of annoying and repetitive.
The jumping and moving is slow and floaty. None of the characters ever gain or lose momentum, and the floatiness of the jumping makes platforming difficult. Also the camera is too close, and that makes it easy to fall into pits that you didn't know were there.
I'm really sorry you weren't satisfied with the new demo, although I do appreciate you're continued support and favoriting the first demo. I really don't disagree with any of your points, I think I lost a bit of what made the original fun.