Man I skimmed through most of the thread, especially the last part.
I love playing games how I had them back then, but in general:
I love composite where there were more “colors” if you used it, so this means rainbows and dithering (at least), and for things like the mountain ranges in final fantasy where you get those bits of cyan and magenta.
For SNES, S-Video was it, it looked great, and I remember at one point on my last CRT, I think it was a Sony Trinitron type… I could see it did not dither the shadows in things like Top Gear 2, so maybe things got too sharp I guess…
For PS2, I did use component. Anything really modern I would prefer component or just HDMI.
I think it’s great that RF, composite, S-Video, etc. can be simulated, since honestly it was kind of subjective how we played the games. I remember the NES always looking different depending on who’s TV it was being played on. In particular colors and backgrounds in games like BattleToads…
The right way is how you like it, in some cases the barebones default might the best for older consoles, since newer ones had more colors and did not need to use as many “tricks” to get a really cool picture. NES without composite looks sterile to me, but someone may like it that way…