I chose Gruumsh. I never really liked the orc pantheon, and with his elven counterpart already gone his mythology is rather lacking (in regards to why he has one eye, for instance).
I am quite surprised that Hextor has been the leading contender for the last few polls (by means of minimum votes). Its beginning to look like he may be the eventual winner. Boccob and either Gruumsh or Erythnor will fall this time, and it seems likely that whoever doesn't fall this time will fall next time - likely with Olidammara. That leaves Heironeous, Hextor, Kord, Moradin, Nerull, Obad-Hai, and Wee Jas - none of which, I admit, I particularly like (although I also admit that I don't particularly dislike a couple of them).