I think they should add all perks (cept maybe deadshot) into all maps. But when you think of priorities and if they are only adding 6 perks then I think they did good.
What you need for sure is...
Sleight of Hand
Everything else is open. And the way the map is designed, it makes Who's Who a good perk if used correctly. Then there's Mule Kick which you almost need at high rounds due to running out of ammo. So unless they wanted to add Deadshot, Flopper, StaminUp, and Tombstone, I think they did good. Flopper would make sense due to close quarter explosive immunity but the dolphin diving feature would be almost useless.