Just some more info I forgot to post about "Chosen Knights" riding monstrous cav...

*all models will of course count as Monstrous Cavalry, and be W(2).
*Khorne, Nurgle & Undivided will have impact hits (1).
*Slaanessh to move as Fast Cav (crazy thought)
*Tzeentch be like Pegasus Knights, and gain Vanguard.

No mention of Champions taking magical weapons, but a definite yes on Magical Banners for all units.

Hearing this from my buddies has brought back some nostalgia (3rd/4th Edition) as well as rekindled my spirits!!!