What about Andrea Leadsome? Yes she's firmly "leave" but from the bit I've read about her, it seems like she might just have a clue about how to proceed after we've actually left.
Nothing I have seen from Leadsome has given me the impression that she has the faintest idea what she is talking about. She seems a complete lightweight.
Rory Stewart comes across as intelligent and moderate, which immediately rules him out of having any hope of winning the membership vote. I can see him maybe becoming a leader a few years in the future?
Jeremy Hunt - surely everyone despises him over what he did to the NHS?
Dominic Raab - seemed very uncomfortable with the public role of Brexit secretary so don't see him faring well as PM. Also didn't know that most of our trade comes via Dover. Who knew someone educated to lawyer level could be so thick?
Matt Hancock - wheeled out as spokesperson every time the Tories have something unpopular to discuss so he's obviously game for a challenge but as someone mentioned upthread, doesn't seem able to string a coherent sentence together.
Bozo - so lazy that I genuinely don't think he really wants the job (see also: Jeremy Corbyn). Complete disaster as foreign secretary so I can't see how anyone would think him a good potential PM.
Penny Mordaunt - don't know enough about her.
Esther McVey - no, no, no! Worst of an absolutely terrible bunch. Genuinely mean and vindictive against the poor. I would actually prefer Bozo.
All in all, with the exception of Rory Stewart, it reads like a list of the people you'd least like to be stuck in a lift with.