I'm sold, thanks for the comparisons!
For a while I didn't really notice the changes but now it's just what I need, clarity. Aside from the dark coloring which I used to complain about for years, all that weird bloom/what ever always seemed too bright to me and I couldn't make things out. The colors seem to be a tad more washed out on the U version right? Though unlike with Brawl I think I'll be happy with it here.
I tried for years to give this game a second play through but man was it hard. If it wasn't all the visuals it was the long opening. Now that the visuals are crisp I'm willing to give this game fair shot with my wiser, handsomer, fatter self.