Previous versions worked great by keeping out of sight and preventing obtrusive YouTube ads. Unfortunately the current version is somewhat obtrusive:

1) A bunch of gaudy unneeded buttons overlaid on top of the normal player interface. A bit not-so-subtle distraction from video content. Unfortunately in smaller windows these buttons also haphazardly overlap with vital player functions like the volume button.

Note that all these buttons can be disabled one-by-one thankfully.

2) There's a bug keeps turning on autoplay even when you explicitly disable it. This has made me disable this extension for now.