I'd check the records then, if I was you. Blackwell is more than good enough to get through 10 overs and keep the rate down, as he has shown in the past. In a ODI team he'd be more of a bowling all-rounder, but with a higher ability with the bat than most, for me. Perhaps not quite a genuine all-round number 7, but probably as close as we have.
On ability, Blackwell would be in ahead of Yardy. But we all know why the selectors won't go for that.
hasn't he also had some behavioural issues? Or am I thinking of someone else.
Definitely a better bat in shorter formats, bowling is quite different in terms of style, fairly similar in terms of effectiveness. I think Yardy's captaincy (which is fantastic) helps in his selection, he'll bring a lot to the team off the field.
Yardy is in possession now and I think it's fair enough, Blackwell does have some fitness issues (or has had, I think he improved it last year, didn't he?), hasn't he also had some behavioural issues? Or am I thinking of someone else.
I think he'd be one of a few candidates to come in if Yardy's value soon dropped off as the 2nd spinner. He's a shoe-in for World Cup imo.
I might be barking up the wrong tree but I think remember him getting lashed on England duty once. Could be a completely different person but I think I've heard that at some point.