I'm assuming you mean KSM (Khalid Sheikh Mohammed). I think it could be strategically valuable to be able to parade pictures of your former enemy looking like this: http://usofarn.com/wp-content/uploads/2014/06/Khalid-Sheikh-... . It would have been awesome if we could have done the same with Bin Laden.
I don't know how my fingers wrote "H" for Mohammed, but yes, of course. :-)
I'm not sure I agree that it's strategically valuable - in an asymmetrical engagement, it seems like this just provokes sympathy and stokes recruitment.
Treating him (both of them, in fact) with dignity, respect, and an honest public trial including an accounting of their crimes might help, though.