Im a big fan of Brook I think he's being a bit hard done by. Im hoping for a big fight from him and then upwards and onwards to some fighters with more pedigree.
There's nothing special about "Special K" He'll lose when he finally fights a better opponent, and his promoter knows it.
I have seen Rose once, not seen this Maciel fight yet but his record looks decent. He has mixed at a high level so if he really is that good I think he should have at least enough to make it into a very close/controversial affair if not win it. As for Brook vs. Senchenko, having watched Brook a few times and Senchenko in the Hatton fights my opinion is that if Senchenko can get through the first 6-8 rounds he can make this a very close affair. I did not see Senchenko's loss to malinaggi but apparently he has vulnerable skin, if Kell does not manage to bust him up badly early on he is in for a long, close fight imo.