Greasy Fork

With the growth of your script you're gonna be tempted to add more & more settings. Fair enough; but some of them aren't going to be about compacting the layout, just personal choice. Example:

/*--- Remove channel avatar, suggested videos and next videos overlay ---*/ ytd-watch-flexy div.ytp-ce-element.ytp-ce-channel, ytd-watch-flexy div.ytp-ce-element.ytp-ce-video, ytd-watch-flexy div.html5-endscreen.ytp-player-content

I know some people don't like 'suggested videos and next videos overlay'; some do. I do.

So shouldn't this be an Option, as opposed to a fixed setting? Or maybe, just maybe, removed - especially since it doesn't really have anything to do with compacting?

You are right. I've just made it an option. You can bring back suggested videos etc. in the script settings.