The UI regarding skills and abilities is a bit confusing at the moment, or could at least, be made more useful I think. Separating skills and spells from items for instance. There should be unique hot bars for each and they should look different in order to be obvious and intuitive.

Also keeping spells ordered in some way as well would be helpful personally. Order them by level, or type or give people a choice. Over time, especially as my list of skills and spells grows, I need to be able to glance at my hot bars and know where everything lives.