alt Hacker NewsI don't have a problem with compulsive watching, so for me the subscriptions view is good enough. I think there are be extensions for Firefox to customize the layout the way need, but it falls in the pitfall of relying on YouTube code for it to work, so it's bound to be flaky or have a short lifespan.
For the most part, I've been using the apps for so long that compulsive viewing is not an issue on my end either. That said, I do have my days and I don't want to slide into that habit. By sticking to my curated list, I am limited to a couple of hours of videos a week. Quite often it turns out to be less since I've grown much more selective about what I will watch from that list.