My, personal, choice in the last leadership campaign was Erin O'Toole, but I, too, would have preferred Rona Ambrose.
In my opinion Ms Rempel, and another young Albertan named Natalie Pon, represent the CPC's future ~ young, urban, nationalist, socially moderate, fiscally prudent, etc ~ but neither is, yet, sufficiently bilingual. Ditto, I think for Ms Bergen, I'm not sure about Lisa Raitt.
I know that will rub a few people the wrong way but the fact is that we are officially, constitutionally bilingual country and a leader must be able to speak to and understand people in the other official language at least as well as Jean Chrétien did; that's not an incredibly high bar.
Just my :2c: