According to the Burning Legion Missive:
What if Archimonde meant that they plan to control the Draenei instead now that the Orcs refused?Archimonde: You have failed, Kil'jaeden. The orcs did not drink of Mannoroth's blood as you promised.
Archimonde:I care not for your vendetta against the draenei... but their souls may still prove useful to us.
We already have seen several Draenei forces pledging allegiance to the Shadow Council, and by extension, to the Burning Legion.
In several time travel stories, you can only change details from the past but the outcome is almost the same. What if Garrosh was wrong and times can't really change, and Draenor is doomed to genocide and destruction?
What's your thoughts on that?