Not really tried to do this, but here's my take
1) Archer (so much easy synergy and oveeral strong cards that don't require synergy)
2) Warrior (all else fails, orcs and Smorc)
3) Assassin
4) Sorcerer (don't get it, I love sorcerer, loads of cards that are strong without needing synergy, and good balance for midrange)
5) Battlemage (burst, burst, control)
6) Mage (Actually don't mind mage, decent standalone cards that don't require synergy)
7) Scout (just feels a bit average)
8) Spellsword
9) Crusader (to weak to rush, too fragile to control)
10) Monk (Terrible in arena imo, always feel like the deck lacks direction)