Maybe it's obvious, but how about Kodi?
It has support for CEC (for utilizing your TV's remote through HDMI), of course there are other input options as well.
There's plenty of plugins to support online video services. Needs some work to configure them, and sometimes it requires maintenance when a plugin stops working, but I was in general happy with the way it worked while I used it for a few years.
It's the moderation staff's responsibility. Sorry for nitpicking, I understand in this case it's likely the same people.
I just get triggered when I hear that an open source software developer should have any responsibilities at all (maybe apart from some extreme examples), and I wouldn't like this idea to stick in anyone's head.