I salute the idea to bring back the Fel Horde even for a short time. Its my favorite faction and i wish the playable Horde would become Fel Horde (or atleast a 3rd playable faction as Fel Horde), but for Blizzard its all about fairy tales where the good guys always win, so probably there will be no such thing as playable Fel Horde or Legion or Scourge etc.
As a lore guy (pretending that blizzard is not about fairy tales for a sec), i ask whats so bad about fel blood? Makes your faction a lot stronger, there is no mind control (legion doesnt actually mind control the fel orcs, as we saw in TBC, Magtheridon as a slave for the fel orcs).
Is the only reason that we must play in fairy tale and do good here and there? Cos i wanna conquer shit! I want to see Fel Horde invading the Legion, i wanna see a fel Tauren blinded by rage just quaking the ground as it charges towards those puny Felguards!
I want to ram the Eredari gates and i dont want to do it with Thrall, i want fel Grom, so that those demons know whats coming when the gates will fall!
PS: I do have to say i have a slight smirk on my face when i see Alliance whining, almost crying a little, at the idea that Grom might rejoin the playable Horde.