Here's why I think Draco will be redeemed: The Sorting Hat has been stressing that unity is the only way they can win - I believe Draco and Harry will have to find some common ground so they can work together to defeat Voldemort.
Interesting. Especially since DD tried so hard at
the end to "salvage" Draco.
I also like that idea of DD leaving a memory or two
his own for Harry to "view" via the pensieve.