Such as...I still don't like Mags. I don't HATE the character or anything, she just frequently annoys me.
One thing I find interesting about this show, and wonder if it's a style choice or more just how shows are in Canada: things happen that would usually be more fleshed out, or dwelled on longer, if it was an American drama. One example since you're nearly caught up: at the end of season 2, Theo is in a helicopter crash. At the beginning of season 3, time has passed and he's returning to work. I feel that if Transplant was an American show, there would've been an entire episode of him fighting through the woods to get help and more episodes dealing with his physical recovery. There's...something else that happened two episodes ago, which you've probably not seen yet. I won't spoil anything but again, it was something that just kind of happened and then we moved on.
I still really like the show and would be incredibly disappointed if NBC didn't air season 4 at some point. And kind of off topic but...I wish CBS would just air the rest of Ghosts UK as well.