having to pre-meditate the foot you play off isn't that bad, it means you can get suckered in to playing off the wrong foot.
I think to a degree, in real cricket you pre-meditate front or backfoot movements anyway. The difference is in real-movement you have time to change your initial movements organically. You can move forward initially, then rock back onto the backfoot if it's a shorter ball... Evolution gives us the ability to quickly identify line and length. Since none of us play international-level cricket, I would assume after a while facing 140kmph bowling becomes relatively easy once you get used to the pace and you get better and identifying deliveries to go back and forward to. In the game, once you've selected front or back foot, that window for change closes and you can't change your mind as the ball hits mid-pitch to rock onto the back foot, because of the timing window and other factors. I imagine that's something BigAnt will look into in any follow-up game, the ability for the footwork change to not "time out" so you can switch between front or back-foot at any moment.
Problem is we haven't yet evolved the ability to transfer those skills to our thumbs that drive a controller. Furthermore, while you might have reasonably good abilities judging a delivery in the game without pre-meditating and then moving your thumbs quickly, the rest of the system is controlled by 1's and 0's which aren't as fast as the human brain, muscles and so on.
So to have the computer accurately replicate 140kmph would make it impossible to play the game, simply because hand-eye-computer co-ordination is minute-seconds out from real movement.
That being said, I think the ball-speed is absolutely fine in the game and getting used to the varying pace in PRO mode takes some time, but is reasonably easy once you get over the learning curve. The issues with batting comes to down the oft-repeated "value for shots" opinion, that many have identified.
The fielding is the biggest issue to batting at the moment. The field sets, the unbeatable bowler who stops all drives, the impossible mid-on/mid-off diving catches and so on. You're not getting value for correctly executed shots when you do pick the right shot, time it well... and square leg plucks it millimeters from the ground for a catch that simply wouldn't happen in a real game, or would maybe happen once in a blue moon. Problem is, while visually these catches have spectacular animations, they happen 1 in 3 times, where it should be something like 1 in 100.
I think of the MANY things that are right in the game, the bowling is pretty much note perfect, fatigue needs to be fixed but that's a pretty easy job... the speeds are fine, if you want a more difficult pace just play at a higher difficulty. Currently though, that higher difficulty means the fielding and batting gets much too hard much to quickly, but I have no doubt that'll all get ironed out in patch two.