[eracknaphobia]

First, have a option to only see the resolution set in the preference setting (why do we need to see all the available resolution when we always watch them in 1080p)

Depending on a users internet speeds or device the best stream may not be usable. What I've done in my other add-ons is to have a "Play best stream available" setting. That should be do able in the add-on too.

Second even more important feature, would be to support the kodi checked mark icon to flag watched video, so all users can know what episodes they watched.

I'll have to look into this, I'm not sure why the watched status isn't sticking.