[Switchblade]

I don't think anyone at Marvel really cares about the Toei co-productions enough to actually do anything with them. The Supaidaman thing was just something that tied into their Spider-Verse story, which is tying in every single version of Spider-Man they have access to (which apparently excludes some of the Sony co-productions, although I'm not sure how much of that is rights and how much is Marvel being a dick towards companies that still have some of its film rights).

Between this comic and Marvel formerly having the show streaming on their site, I think it's safe to say that they still own some of the rights to Toei's Spider-Man. I'm not sure if that holds for Battle Fever J, Denjiman, and Sun Vulcan. The latter two didn't even have any actual input from Marvel, despite the co-credit. Plus they're part of Super Sentai and I don't know how much of that Saban holds the license to (probably all of it, given all of Super Megaforce's "New Powers").

In any case, there is absolutely no reason to think Marvel would bother making new comics for Japanese TV shows from the mid-70s that very, very few of their readers have ever heard of, much less seen. That's like seeing the X-Men anime and expecting Madhouse to make an anime based on US-1.