Seems to be adequate places in act one(EA) to get experience. Just made level5 and still have githyanki, tollhouse, hag, all of underdark to do. Although those should be a lot easier at lev5 than when i did them in a different party at lev3.
All in all a good interpretation of DnD, imho. I definately look forward to the full release. May just save doing the underdark until then, as i hate moving around, figuring things out, getting in fights without and movement on the level bar.
While not having played all character combinations, here are my favorites so far.
-1/2 drow warlock
-we ranger
-gold dwarf life cleric
-gold dwarf druid
-wood elf thief
-1/2 we bard
Havent played any humans yet, but may may a full party and play them as soon as i can figure out a good combo. I usually like to create 3 , which allows me to rotate in the npc's if needed for plot, etc.