There were some awful choices, especially in season 2. And yet now that it's over I find that this show is staying with me. I guess it touched something in me, maybe my inner history nerd or maybe just the fact that there was some heart to it despite everything. I'm not saying it deserved another season, but it probably deserved the chance to wrap things properly. All those new characters and those major plots brought in... Oh well. But at least we there was closure for Mary.