I believe like you did with Iron Banner there needs to be a freelance version for those who don't buddy up.
It's more enjoyable when no one is teamed up and it's a random skirmish vs people with their buddies camping one spot.
I also think this would bring out what it means to be the best at what your class and show off your skills all alone.
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Freelance can be a perm feature but flawless pool is removed. Deal?