The Pistons have some talented young players that could form a nice core.  But, the most obvious piece that's missing is a young Ben Wallace.  The Pistons clearly lack and desperately need a game-changing presence on the defensive end.

Most of the established players that provide interior defense come at a hefty price tag.  Among those that are (conceivably) attainable are Emeka Okafor, Joel Pryzbilla, Andris Biedrins, Marcin Gortat and Samuel Dalembert.  None of these guys will make you forget Ben Wallace who, in his prime, was truly one of the greatest players in the game.  Any of these players would make the Pistons a better team, but none of them are likely to raise the defensive game of their teammates the way Ben Wallace and Kevin Garnett did.  That being said, I wouldn't mind having them.

The other route to upgrading the team's interior defense is to find another diamond in the rough.  Another Ben Wallace.  Or a big-man version of MFWB, if you will.

I did a little sleuthing and found very few promising options.  Joel Anthony is a great shot-blocker, but a lousy rebounder, for example.  Of the free agents available, only one player caught my eye:

IAN MAHINMI

I haven't seen him play.  And the odds are that he's just another end of the bench big man.  But (in VERY LIMITED time), he's put up good shot blocking and rebounding numbers.  With Tiago Splitter joining Tim Duncan, Antonio McDyess, Matt Bonner and DeJuan Blair, I don't the Spurs resigning him. 

If he can be had for the bi-annual exception, he could be a low risk/high reward signing.  Plus, the Spurs generally do a good job of drafting and even when they give up on a guy (Luis Scola, Beno Udrih, etc), he turns out to be a decent player.

Has anyone seen him play?  And could you give a scouting report on him?