1. When you level up you will have to decide if you want to raise magicka, health or stamina (as far as I understood the attributes are gone) but whereas a warrior might only need to put most points in health and some points in stamina eventually reaching high values in those, a battlemage would need all of these raised and will most likely end up weak in all categories. In previous iterations of TES you just planned a little bit more and could get most if not all attributes to the maximum.
2. I also fear that the perks will mostly be designed for archetype warrior, mage, thief/assassin characters and hyprids might not get perks specially designed for them. I strongly hope to be wrong here put implementing those in addition seems like a lot of work and quiet difficult (concerning balancing).
3. All skillups will count towards a level increase and while the highest skills will be weighted more a hyprid charcter will still need more skills at high levels to be effective (or to just feel like one) than a warrior / mage etc. and therefore might reach higher levels faster without really high skills.
Are there any infos concerning this?
PS: sorry if my english seems a little strange it`s not my first language. ^^