there needs to be new weapons types, especially the ability to weild only one one-handed weapon and not onehand and shield. maybe let that skill tree be magicka centered, for those who wish to be spell-swords.
i also wouldnt mind empty handed spell-casting skill tree. you see, in my mind, a mage who NEEDS a staff to function is weak, true mages dont need spell foci, staves, or anything but their magicka.
then there is the absence of spears, i have been dissappointed that in the last 2 TES games there have been no spears or halbards.
there are a myriad of other weapons that people would like to see, but these are the ones i want to see most.