I'm hoping the acting noms for OOTI are Phillip Boykin, Kenita Miller, and Merle Dandrige. (And Hailey Kilgore.) Lea Salonga was excellent, and I'll listen to that recording of The Human Heart all day long, but I just don't think her performance went as far as the other two supporting ladies, IMHO. It's the roles, not her.
I also wouldn't argue with Isaac Powell sneaking in, because I think he really nails a totally thankless role, but it's a crowded Featured Actor season, so it's pretty unlikely.
For predictions' sake I'll say that Alex Newell will probably get the nom, but he would not be my choice out of this multi-talented cast.
Without having heard a few of the other shows, I really am also rooting for OOTI in Orchestrations. Is this the first time that a vocal arranger has been nominated alongside the orchestrator? To that I say ... IT'S ABOUT TIME... and AnnMarie Milazzo's vocal arrangements add so much color to this production, I'd love to see them rewarded.