I don't think it would work. Super Sentai is just too obscure in America. People are aware that PR uses Japanese footage, but that's basically the extent most average viewers know about Sentai.
Marvel doesn't really have any stakes in any shows beyond Spider-Man. While Marvel may have helped produce Battle Fever and Denjiman, they had no hand in Sun Vulcan (It was associated to Marvel by proxy since it was intended to be a sequel to Denjiman), and I think thanks to Toei's contract with Saban, they have more control over those 3 series.

Disney doesn't care about Sentai and Power Rangers, while Marvel doesn't really have any control over the series they helped produce anymore, while Saban has no reason to share with Disney nor act as an in between for Marvel and Toei (Profit share with an unaffiliated company for no real benefit? Saban is a bit too money hungry for that).

I wanted it, especially if Disney decides to merge PR universe with Marvel, but knowing Disney, they'll butcher the series. I mean, they did butcher Marvel when it comes to animated shows. It's only a miracle that Star Wars so far is doing good.

We are all going off about Disney but what about Marvel? Marvel has the final say on what characters they want to absorb. Disney might not like it but they might persue it anyways. There was no reason to go after Namor but they did. And we also have to consider the fact that the only reason Disney didn't like Power Rangers is because they had to play ball with Toei. If Marvel goes after Power Rangers they might ask Disney to buy Toei for full control of Super Sentai and Power Rangers.

Other than Namor being their own character that they may have plans for?

Are you serious with this? There's no way that Disney are going to buy the WHOLE of Toei just to own Power Rangers. Ever.

It's not unpresidented. In the recent past Disney attempted to purchase Warner Bros in an attempts to absorb DC characters, Harry Potter, and Looney Tunes. That purchase was considered a monopoly and stopped by the US government. So it's not far fetched to see them attempt to buy Toei. Not only would they get Super Sentai and Power Rangers but also Kamen Rider, Metal Heroes, Sailor Moon, Dragon Ball, and Digimon. Disney already has experience with Power Rangers and Digimon. It would be too sweet of a deal to pass up. And because it's a Japanese company they might be able to avoid the monopoly laws.

All I am saying is watch out for the mouse. It gets what it wants even if it hates it.

And you think Power Rangers generates anywhere close to the amount of money Looney Tunes, Harry Potter or DC does?

...What? Did you miss the fact that Disney completely owns Marvel?

Yes they can ask why would they? but in no way do they have any power over Disney at all.

Disney can not buy Toei. Japan has laws against foreign companies owning more than 49% of a Japanese company. While it can be overturned, they aren't going to allow the biggest animation studio in Japan to be owned by foreigners.

Also, Disney doesn't want Power Rangers because they don't solely own it (and can't) and they never wanted it to begin with.

Honestly, I don't think they even had that much to do with Denziman. Battle Fever J started as Captain Japan but took of on its own, very, very strange direction pretty quickly. Marvel and Toei's business deal was for four shows, but after Supaidaman and Battle Fever, it really seems like the last two just had Marvel's name on them to satisfy the agreement, not because of any actual production contributions.