I do think that Jett's size does play a factor in a lot of things defensively.
So, pretend he's a great SS, how many balls get passed him that a great SS that is 6" or taller get to? How many times does he make a great outstretched play, but a normal sized SS makes with ease? If we are giving up 6" or more with every play from a tiny SS (who is playing next to a very short 3B in Durbin I might add) it has to have an effect on the game, defensively.
Seriously, having Durbin and Williams on the left side of the infield gives up a lot defensively when both players are severely hampered by their size. That simply can't be argued. I'm going to bet that we would have the shortest combination on the left side of any team in MLB, maybe even in the history of MLB. lol
There are so many instances in a baseball game where having a good reach is a definite benefit, especially when it comes to IF play. It's called a game of inches for a reason.
Pretend he's a great CF, as some here have eluded to, how many balls is he unable to get to because he is 5 to 9 inches shorter than most CF...
His size does play a part in his/our success.
I like the guy, I hope he is a complete and total stud, and that in a couple of years, we are still talking about how we fleeced Stearns and the Mets with the trade, but dismissing his size completely isn't looking at the entire picture.
I trust that Arnold explored all his options, and in his opinion, this one benefitted us the most.
So here's to hoping that Jett and Sproat fit right in, and we have 2 more valuable pieces to our puzzle for years to come.