Brannen tried to set the precedent that we will bring in whoever gives us the best chance to win and we see where that got him. In order to get guys who are willing to spend a year or two developing on the bench (and contributing in practice) you need them to trust that you will give them a chance. It doesn't mean they will become a starter, but it means if they do everything you tell them to do, you are going to give them a real shot to prove they deserve minutes.
Ody is my example. What do you think Wes told him last year when he recruited him. Probably something along the lines of we are going have you spend one year developing and then next year (when Ado/Koval graduate) you'll get your shot. If you bring in a veteran center, immediately give that new guy first teams reps in practice and play him 25+ minutes per game, Ody will feel like he never got a shot. Other guys aren't going to trust you won't do the same thing to them. It doesn't mean Ody needs to start, just that you need to give him a genuine chance to compete and win the spot (which I think you'd do by bringing in a guy like Sparks).
It may win more games in the short term, but in the end you are going to have a fewer guys come and develop, because they won't trust you not to just throw them aside when another option comes along.
As for our defense, as has been noted many times by Chad, we played a bunch of games in not very many days during February. That meant limited amount of time to practice, which is reflected in our defense and offense getting worse.
I agree on the Davenport/DDJ issue, but it seems like we are going to have to live with it for one more year. It seems like Wes either thinks it's not a problem or that it's an issue we can overcome. If we can get a taller guard, it would allow DDJ/MAW/Transfer to rotate for defensive purposes as well. Plus Skillings may help in defending bigger guards.