Not as much as I'm going to miss that Krogan that you set fire to on the way to find Maelon.
ie, not at all.
That was probably unnecessarily snarky, but I just really can't wrap my head around the Harbinger love. It had potential to be interesting, I guess, but it was just a rehash of Sovereign, only its insults seemed somehow cheaper and pointless (and less well written - except for the speech at the very end of the Suicide Mission, that was Harbinger's only really good moment imo). Its big interest in Shepard had the opposite effect of making it a good villain too, it should have been totally aloof, except for the occasional insult/brag. I even find the fact that they made it the original Reaper kind of naff, to me it felt like it was an attempt to bring some kind of legitimacy to a character that otherwise had none.