On the subject of ITV dramas not fairing too well, I don't understand why they don't revert back to similar things that were huge hits in the 90s, stuff like Bramwell and all those Catherine Cookson adaptations. Downton is their only runaway smash hit and look at the period it's set in. I'm not saying they should recreate that, but in general they should clearly invest in more things like this. Is it the cost aspect that's stopping them? As for suitable material, there are a wealth of books by popular authors with settings from Victorian times up to the 60s that would probably go down a treat. They would inevitably do better than things like "Leaving" which, while nice enough, was effectively one long singular soap opera story spread over 3 episodes. Hardly must-see TV.
I didn't see The Bletchley Circle so can't comment on why that didn't do better, but that seemed more detective based rather than the whole "family drama saga" set in certain periods/areas I mean.
Call The Midwife obviously exceeded expectations but it shouldn't be that shocking as again, the period it's set in and the subject matter meant it was bound to draw in a large crowd. Plus wasn't that book absolutely huge?
On the flip side, as much as they make me want to vomit, they need more lightweight "cosy" dramas like Where The Heart Is and Wild At Heart which shouldn't necessarily be restricted to Sundays alone.
Fair play to them for trying more this autumn and adding variety, but it's got an element of throwing stuff and hoping something sticks about it rather than going with subject matter and settings that could work so much better.