I guess.
For me though, if I had to choose between a DmC sequel made with Kobayashi on the helm and a DMC5 with Kobayashi as head of the game, I'd rather choose the latter and end DmC then to see it become a pretty boy-inducing anime game. (no offense to Sengoku Basara I like the series but...I rather not have that with Devil May Cry.)
Don't think that will ever happen. DmC is Ninja Theory's game. Capcom staff will advise and assist on the gameplay, but they will never particpate on the story or things like that.
If the Japanese staff involve themselves in story and characters it will be DMC4 only. The same way Ninja Theory will have nothing to do with DMC4.
It really is down to the sales at this point, if DMC4 can sell a lot more copies that DmC, DMC5 will be made continuing the story of Nero. At least if DmC dosen't continue it will go out with a bang this coming March. Thats enough for me, that Capcom/Ninja Theory make this game the pinnacle of the series by giving us a definitive edition. Once that is done it dosen't matter to me if they cotinue it or not, I will be satisfied.