Yeah, sounds good, but also very unlikely if start thinking from a corporate POV. Because aside from the niche retro crowd, not many people may even know what Maken shao/X is, so pouring resources into it to port it to modern platform (let alone combining two different versions of it) seems impossible, but never say never i guess (after all, Bullet Witch got saved from the xbox 360 exclusivity jail).
Didn't know about the existence of Bullet Witch.
Some obscure titles get ported or remastered out of nowhere.
Though, as you already know, Atlus is focusing on the more recent installments in the franchise (>2006).
There have been pleas for them to remake or port Persona 1 and 2 to PC, but I don't know if they will ever do that. Besides, the fanbase has changed a lot in the past 10-15 years and people would probably find the early Personas a bit strange.
Maken is likely more accessible, as it's a game you can pick up and play. But yes, it's niche, being a spin-off of a larger series.
I actually discovered SMT through DemiKids on the GBA, but I have to revisit them. I was just a kid and even then I noticed that DemiKids had a darker atmosphere compared to other RPGs. It was a bit scary.
At the time there were barely any SMT games translated, though years later Imagine was released in the West... sadly I never got to play it, but it's another game that has Kaneko's artwork.
My best friend had lots of fun with Imagine, it's one of the few MMORPGs he got into.