MGR wasn't written by Kojima, it was Etsu Tamari. He hardly had much involvement with Rising and just basically gave the people his ok and the lack of that directorial flare the Metal Gear series is known for sure as hell is obviously lacking. Trust me, I know Metal Gear. I've always wanted a cyborg ninja game but I want a TRUE Metal Gear Cyborg Ninja game. MGR just seems like P*'s cover of a Metal Gear game and I sure as hell was let down by it. It's not just even the universal hatred for Raiden, it really does lack the Metal Gear charm and any Metal Gear fan would tell you the same. P* might be all about style over substance but Metal Gear had both and Rising is suppose to be a Metal Gear game regardless of the change in genre and spinoff status surrounding it.
I hope they let Kojima work on his Gray Fox game because that's what everyone always wanted and if Kojima would be directly involved with the story and all that than we can get a Metal Gear experience. P* doesn't get Metal Gear and also the gameplay was still lackluster on their part.
I'm a fan of MGS myself and i've loved MGR, it added things to MGS universe but kept the things simple and respected the MG and MGS legacy, and it's a better and more challenging hack'n'slash than DmC. Plus, it's not MGS, it's MGR. MGS still continues as a franchise, MGR did not "hurt" the MGS franchise in any way. They've even added a brazilian character that's freaking cool and is not only one more capoeira fighter. And the "Raiden hatred" ended turned into a good thing for people who played MGS4, he plays an important job on MGS4 story without stealing Solid's spotlight like he did in MGS2.
As Wesker and GF900000 said, i would be very happy if they continue with the old DMC series while not killing the new. But i doubt that this would happen, games are so much expensive to produce nowadays.
I think that Capcom will continue with this new DmC even with the poor sales, even if they make only one more game of the franchise. I hope at least that they give an ending to this series rather than doing what they did to DMC, it really sucks to have a franchise abandoned for nothing.