[Ithekro]

The warlocks seem to want to get something (different or extra) for their efforts in questing to get the dreadsteed over the vendor purchased version.

Suggestions have been :
Green fire (why is it always "green fire") epic flaming horse.
An Achievement or Feat of Strength.
A Rank Two Dreadsteed spell that make it so our flaming horse can fly once you have the skill to do so.

I personally like the idea of multiple ranks for the spell so that we can have a flying version of it and maybe later in the game (Northrend, level 77) get a Rank 3 spell that will make it a cold weather, flying, epic, flaming, horse. (possibly green).