I am not a fan of Restricting Valar. It would instantly be my Restricted card for every deck I make. I remember in the late 5KE era when there was no Valar . Games were not as balanced IMO as when Valar was in the environment. A reset-less environment is really not all that fun for my playstyle.
It heavily favors Rush over Control and Combo. Wildfire doesn't even count as a reset IMO because people can save 3 cards and against many builds (like the Top 2 decks of CaliCon) Wildfire is virtually useless. I find it interesting that some of the proponents of banning Valar (Stag Lord, Staton and Fieras) are some of the most vocal Baratheon fans on the board. Hmm...