I so hope this gets done. Even if it isn't a Heroes remake, Klonoa needs a 3ds title... And I would love a Heroes remake with better gameplay and, as I heard this was a complaint, enemies that are a little more challenging (i.e., how a lot of moos in DTP had unique ways of getting rid of them) rather than enemies who do unfair amounts of damage as an excuse for higher difficulty.
Even though Door to Phantomile is my favorite game ever (as again, the gameplay in Heroes was such a big complaint) Heroes has one of my favorite stories in a video game, especially since it had a good amount of character development, and even attempted to kill off its main character (which was one of the few moments that actually made me cry at a video game) and I very much hope that this game is remade with improved gameplay, because I would buy the hell out of that game.
It would suck if they had to censor it for "family-friendly" purposes. One because I don't like censorship in art (unless the artist has malicious intent, but I don't think that's the case here) but also because Klonoa has always been a cutesy game with dark undertones and removing that doesn't feel right.