I have a few complaints some I hate and others that are just annoying.
I hate the world map not the way that its a picture where you can see that 1 area is all snow and another is green but the way you are looking at it at an angle instead of top down. the major roads are not marked down on it. the zoom in and out sucks, you cant zoom out to see the whole thing and you cant zoom in enough.
The inventory controls on the PC are horrid, some of it you can use a mouse to select and others its keyboard only. they have the choices marked on the bottom tab to exit, E to equip or take, R to take all or give but clicking them does nothing. its not hard to make those a button, just lazy not to. clicking an item sometimes equips, sometimes gives or takes then some items you can only use keyboard on, consistency is something that is severly lacking. theres a whole lot more about it that annoys me, suffice it to say i dont like it.
Im not sure if i completly dislike the level up system, I do like the simplicity of it but I think its over simplified. the first things you choose to upgrade magic, health, or stamina would be better off being a stat only that upgrades the more you use it. using a lighter weapon like a dagger or one hand sword, plus magic and stamina/magic upgrades slower but more even. use magic 2 handed and magic upgrades but stamina does nothing. use meelee weapons and no magic and magic does nothing but stamina rises. having it as a choice on where to put a point doesnt make much sense when the more you do an action the more it increases would make more. i like the perk system though. the whole level up system to keep it simple but an improvement I think would be to have the major atributes upgrade automaticly and have 2 choices in the perk system. 1 you choose a perk like it is and the other choose a perk tree to "study" where the skills will level maybe 5 levels the next time you do it.
I think the amount of enchantment choices for armor and weapons was a major step backwards and way too limited. plus the armor setups suck, helmets, armor, gloves, shoes, 1 ring and a necklace. i think they should have stayed with the older more choices system of earlier titles instead of having less to choose from. thats another thing i find annoying...