You know, we slam the Stryker brigades pretty hard here...as anyone ever given thought to having to go to war with these?
The Pentomic Division: the concept is simple; your division has five battlegroups, each consisting of a infantry battalion, a tank company, a cavalry troop and a battery of artillery. Division has Davy Crockett/Honest John support (complete with tacnukes!!!!) and a battalion of 155mm for general support (did I mention complete with tacnukes?). Downside is your "division" is now more like a reinforced brigade. Plus side is that you can now field more divisions for the same money AND they can survive a nuclear war!!!!!!!
The TriCap Division: this concept was really pulled out of the bottom of somebody's duffle bag! Your division consists of a Brigade of Attack Helicopters, a Brigade of Airmobile Infantry and a Brigade of Armor. You use the airmobile infantry to set a blocking position to use the numerous TOW/Dragons they have, the attack helicopters shoot the shit out of any tanks moving and your armor brigade conducts its set-piece counterattack.