One question of NFL preseason will be what the Titans do with Henry and Brown fighting for carries and what the Dolphins will do with Ricky Cheech & Chong Williams and Ronnie Brown fighting for carries.
Admittedly, this is a nightmare for coaches juggling egos (and for fantasy owners figuring out their draft board.) However, I believe coaches in this situation often waste a good opportunity to develop a dangerous offense.
Why don't coaches put both of their top backs in the backfield at the same time? Having two strong weapons in your backfield would greatly put the defense at a disadvantage and your offense would be unpredictable.
This offense I'm proposing has been successfully implemented before. The Tecmo Super Bowl Raiders had Marcus Allen and Bo Jackson in the backfield at the same time and that offense was unstoppable. If it worked in Tecmo, it should work in the NFL.