1. The mini screen is easy to get addicted too, makes surfing through the comments or related videos a pure joy.
2. Add blocker helps
3. Also pausing videos when opened in new tabs is awesome.
4. and few other features

Suggestion: If the mini screen could be ported onto subsequent pages while browsing like on mobile version. This would be the perfect add on.
Recommended for Regular YouTube Users.
From Another Regular YouTube user.