Just a note that Hasbro was not the owner of the Rom action figure when Marvel stopped releasing Rom comics in 1986. It was Parker Brothers. Hasbro didn't acquire Parker Brothers until 1991.
It's good to see a deal between Hasbro and Marvel for Rom. Rom, as learned by IDW, loses much of the IP without the extensive amount of Marvel-owned world building, like Galador, the Dire Wraiths, and the other Spaceknights like Starshine. Rom was such a huge part of 80s Marvel; unlike Transformers and GI Joe, he was really integrated into the Marvel comics universe, and had crossovers with just about everyone. His final issue was pretty much a giant Marvel crossover issue, with most of the MU fighting the Dire Wraiths.
IDW just wasn't able to recapture the magic with their comic to rebuild it as a stand alone IP. I don't really think Rom stands as a viable property outside of Marvel, as much as I've always loved the character.
And hopefully a Marvel/Hasbro deal can mean we can get new Rom comics, and maybe a Rom Marvel Legend figure.