Marshall is a headcase but BP has an afinity toward problem guys and he knows how to handle them. I also think that a change of scenery and an exodus from all the negative press in Denver can be a big catalyst to wake this kid up and make him realize his true potential (which is off the charts!!!)
I really think if he does come here you'll see a different Marshall, same arrogance (as that is needed to a point) but different behavior and demeanor all around.
If he does end up here, coupled with a nice off-season for Henne (should he work his butt off and study, study, study film) we really could see this team making a deep run sooner than later...just in my opinion, we need to really go defense this draft ILB, OLB and safety with our first day picks...
Also, I think with Marshall here, you'd see Ted Ginn and Devon Bess have better years b/c they will be able to exploit coverages better when defenses are gearing coverage more toward Marshall...(god i hope this isn't a pipe-dream right now... :) )