Claire Danes also got an Emmy, and she's amazing in this role, so there is that.
I've been watching this on RTE, so yeah. It's one of a half-dozen shows I'm watching right now, and it's also easily the best.
As far as Brody goes, so long as the series can think of interesting things to do with him I'm happy for him to stick around... but I can definitely see the series continuing after him. That's really one of the great benefits of a character like Abu Nazir: Offing Brody could be the climactic end to a tense Homeland season, but the Real Bad Guy is still out there, somewhere, playing his elaborate game of terrorist chess.