I actually liked when they were together in single box, everything was ordered from newest to oldest and I had extension that redirected shorts to normal player. With separated boxes I feel like there isn't enough space and now the shorts don't get the 'watched red bar' so I don't know right away which shorts I've already seen, I'm forced to remember the thumbnails now which is annoying.

I do wish they give customization options, so users can decide how to actually use youtube.