Curios, does the interlacing on say that Ranma 1/2 Chounai Gekitou Hen game have even the slightest visual effect of making the image look slightly more "high res" purely due to how the interlacing works on the human eye?
I would honestly have to think it does, personally speaking--and I'll go try it on Messen-S in a second, as you suggested--but I'm gonna put it out there as a question and see what other people say.
If it does make the image look slightly more "high res" purely due to how the interlacing works, then, outside of personal opinions of how that looks, couldn't that be one reason why it might have been intentionally implemented by some developers?
I was actually thinking of using it in my game on some stage or whatever purely to have an example of it in there. I currently have an idea to show every single background Mode on my title screen for example, showing each Mode in turn on some variation of the same title screen with some gameplay footage of the game in between each variation. I think it would just be a cool way to display the various things you can do with the different background Modes on SNES, as well as make a cool regularly changing title screen in and of itself.
And, sure, some people might prefer their games to not use interlacing and not have a slight shimmer on old CRTs, and that's a perfectly valid way to think of it on a personal level, but it's possible some developers simply thought it would be interesting to try, and that the illusion of slightly more resolution would be worth the slight shimmer, or however it precisely looks, right.
Nice list by the way--went straight into my bookmarks.
PS. I'll have a look later and see if there's any other examples I can find of those rare uses. I've been compiling a list of YouTube videos with this kind of stuff for so long now that I expect I might have one or two decent ones to add to the list, if you care to.