War Hawks

Looks to me like a very toolboxy approach, and may sacrifice consistency because of that. Have you considered stripping it down to more 3x choices?

Wroth in a Bara deck? Given if all goes well you should consistently have loads of cards in hand (I often have more than 10) what is the logic there?

Eldar deck without Warlock Destructor? Really?

I'm not sure I like the unit selection in this deck; they seemed too random and not very explanatory. 

I think overall my advice to begin with would be to drop Wroth, the Warp Spiders, Farseer, Piranha Hunter, and Wraithguard, and add in 3 x Warlock Destructor, 2 x Wild Riders, and 1 x Empower.

After playing it a bit, I definitely see that Wroth is not a card that should be in the deck, and that I do need Warlock Destructors. Farseer and Wraithguard rarely see play, and I do not need the card draw from Piranha Hunter. 3 Warlock Destuctor is a definite must, and I can see the Wild Riders, Empower I am a bit wonky on. Even when I have it, it is used as a shield rather than played. I just think there could be a more useful card. I've been contemplating swapping allies over to DE.

Empower is there mostly to be a shield card, but when you get to a big must win battle at a planet where you have a couple of Hawks, a couple of Biel Tan Guardians and maybe 1 hard hitter, its clutch. I have 3 in my deck even though I only actually play them maybe once every 3 games. Still worth it!

Dark Eldar are the allies I have used lately - I have Reavers, Archons Terror and Sslyth. I am 8-1 with that deck, though it hasn't faced Kith and only faced Eldorath once (the loss) - those 2 warlords are imo the only thing that make Baharroth not top tier, he can beat all others in general.