I run solo with my fire/kin most of the time. And the reason for that is "SB plz.' Fire/kins do some massive damage and are really unappreciated. I'm more likely to keep SB up if the team is demanding it the second it drops. Unless, of course, there is a stoner. He will get SB all the time because they are slow and my A.D.D kicks into overdrive if I have to wait for someone to catch up.