A quick list of people to watch for on the other team. People to take out, people to be careful around, and people to change your game for. Some of them may not be great at one on one combat, but they're still playmakers on the battlefield.
Any organized clan on one side
Arowaine
Balbaroth (still)
Castor
Chaos
DeafeningFlood
Dexxtaa
Givi
Guts
John
Fufu
Goretooth
Havoc
Huey_Newton
Kesh (still)
Linden
Manatapit
ManofWar
Montbard
Peppovitch
Pridecrusher
Robin_Longstride
Shigeru
Troublesome
WallaceSODOMIZEDYork
WaltF4