I think its the little stripe that runs along the chest area and down. I have never had a problem with or without the piping, I don't get how it changes the aesthetic at all.
Like I guess I prefer the bottom one but they're so damn similar
Regarding the uniprons: having totally unnecessary piping (aka, the apron strings) cutting through an otherwise solid background of burgundy - that's one big no-no.
THEN to have the burgundy directly border the blue (dark directly on dark) is the other big no-no.
... these issues then exacerbate one another because the piping that is unnecessarily breaking up the burgundy could have been used as the simple border between the burgundy and the blue - having the piping sitting in no man's land should have never even been presented as an option. It's a bad aesthetic. That's a basic design error that was never addressed (until now).
I want to see more photos of the full jersey (with the new numbering and lettering) as well as the road before I make a full assessment, but my first impression is overall pretty favorable. Yes, it's a rehash of an old design - but that design at least worked, which you can't say about the Reebok Edge mess we've had for the last decade.