I think the wides problem is related to length. When you set it to bowl on off stump, it seems to mean pitching it on off, rather than it reaching the stumps on off. Thus if you're bowling short, it ends up angling down the leg side. Couldn't this be changed? Seems a little irrational to be like this, if I'm right in thinking it is.
Also, I think wides are probably because the movement on pitches is probably a bit too much atm, though I don't know, obviously. Neil, didn't you have a program which showed visually what happened with each ball on certain pitch settings? Couldn't you experiment with that to find out the realistic parameters?
Another thing is that it's a bit hard to experiment as it stands, as the commentary seems to contradict itself. It'll say things like "... full of a length, on the stumps, left alone, wicketkeeper takes it easily" or something - if it's full and on the stumps... wouldn't he be bowled? Have lowered bounce to make doubly sure it's not going over the top, same commentary occurs, there are other examples as well where it can contradict itself.
Pretty playable still just from my little experiment just now, good work.