I suggest you all visit their forum if have questions. Alot of info and guides there. here is one on status effects and DoT: http://forums.bluemammoth.com/showthread.php?t=736
Expertise affects Heals and DoT (Dmg over time). Such as bleeding, poison, ignite, etc. They all have expr multiplier, like poison deals 0.6 x expr dmg per tick, And last 5 sec.
Best Class Abilities: (Viper:Severing-Daggers-Decoy)(Shadow:TripleStrike-Wirlwind-ArmorBane) (Soulthief:PoisonStrike-Chaos-NecroSurge) (Justicar:Skewer-Fist-Blessing)
U can totally customize your character, from look to the stats and skillset. The gears u choose allow for different stts and skill build. I bet you havent passs even lvl10, so dont comment so cluelessly
@swiacki - Thats just your opinion, there are plenty of games as u said out there, this is new and i totally love it. Also u got no clue how much differences the equipements are when u high enough to play hardmode.