No mysticism, fewer spells, no attributes, less skills, merged armor, no spellmaking, limited speed, no parrying, no item degrading, overly flashy abilities, no birthsigns, no classes, no simultaneous item comparison in inventory.... there are a few things about Skyrim which are disappointing to me.
I keep my expectations realistic. I know what type of games these people make and how much effort they put into them. It is unfortunate that even with as much hard work as is poured into it, Skyrim will need many mods to suit my desires.