My biggest complaint at the moment is the map. Fog is reset every time I load the game or change instances, which is really annoying. I can accept this in games like Diablo 3, but not in exploration game. I hope that this regenerative fog is here only for aplha, it would be almost impossible and frustrating to navigate through large open map like this.
Secondly bartering is little confusing. It took me some time to figure out what is the barter icon, sice I expected it to be a dialog option. And then I sold great amount of items for free, because I didnt know it is necessary to hit another button to balance items with gold. Why not balance it automatically? Or at least give me a warning Im selling for no gold? I would recommend to explain basics about bartering in tutorials.
And one other thing - it seems unnecessary to me gold to be stored in the inventory. If this is meant for co-op purposes I still dont see a reason why gold should be an item. It can be simply bound to account of each character. And for singleplayer it has no meaning to have these individual piles of gold.
I understand that combat will undergo many changes in every aspect, but right now the warrior class seems to be underpowered. When playing with duo ranger-wizard I can take out enemies from afar with little trouble. Warrior has to go in the middle of the fight and takes hits from all sides. Not mentioning he has to cross all fires and poison clouds on the ground. His skills dont seem to give him an edge - for example I have no idea what this Inspire skill does and how close I have to stand to other character for it to work.
Moreover skill like Inspire would come in handy rather later in the game when I have full party, then at the beginnig of the game. I would like him to have skills like Cleave which would deal great amount of damage to one target, then perhaps Shield bash stunning all enemies in front of him, and then for example some sort of defensive stance like Shield wall greatly increasing damage reduction and resistances (at the expense of reduced movement and damage). This would allow the warrior to function as a tank, while his companion takes enemies down with bow or spells.
So these are my first ideas. What about you?