Thanks for the link Kit. That was interesting and pretty much summed up what most of have thought about this. I actually thought he was pretty honest about everything. I liked the part about plot not being his strong point, but would have expected others to give their input to this. He also admits that Sidney is a "bad-tempered bastard", so we weren't wrong about that either.
Time will tell if another series happens - there might have been a lot of social media about this, especially the ending, and not all of it favourable, but I think we live in the world in which any hype and publicity is noted. Sufficient volume of indignation might well be enough to get it recommissioned.