I see your point. What I tried to assess is: which episodes enhance the viewing experience by rewarding the viewer for sticking around. For example, watching “Datalore” before “Brothers” is definitely not required. But it gives you some good backstory on Lore. Similarly, watching the various Maquis episodes on TNG and DS9 is not necessary to understand the Maquis characters on VOY but it’s a nice slow buildup that contextualizes a few things. Or TNG’s “The Price” and VOY’s “False Profits” – neither of them are really good episodes but it’s a “oh hey, they picked up that storyline from years ago” moment that I feel is very rewarding.

And of course my all-time favorite joke when Worf hears that Keiko is having another baby and he reacts with “Now!?!?”. It only really works when you’ve seen “Disaster” before.