If Finn got anywhere near the side we'd have had it by that point anyway, surely noone can be that upset about it? He got dropped halfway through an Ashes series even when at his absolute best, and he's nowhere near that now.
Given that the available spot is for effectively a 6th choice seamer, I'd rather see a bolter called up than a steady bowler like Plunkett - Plunkett's not going to let anyone down but if whoever is in the squad as the 6th seamer gets to actually play a test then we'll probably be in need of a bit of inspiration! George Garton/Tom Helm/Tom Curran perhaps.
edit: ah, Tom Curran. The predictable option really, hard to argue too much with that.