It could be you being used to the original Ego Draconis because for me I would not change the new camera for love nor money!!
You can see so much more detail now in everything you see and do. Close up enemy fight animations from items on a trading table to just looking around be it trees, rivers, door, tables, plants, creates, treause and the list goes on. For the better you are on top of the players view and can see and line your self up around corners much better. The camera follows really well and doesn't get so messed like it used too trying to keep you in play now and then like walking down a stair-case.
I put the original Divinity II back on and although everything looks small now I was used to the camera in seconds. You can always fall back, but as an XBOX gamer with the likes of GTAIV, Red Dead Redemption, Tomb Raider, Red Faction, Phantasy Star Universe, Just Cause, Star Wars Force Unleased, The Saboteur and even Gears of War to some degree they all share the same type of camera view as the new Divinity II Dragon Knight Saga - should I add Risen & Gothic 4 for good measure???
One of the best things about DKS is that you can now see the beauty of it all like never before.
If you having problems with things attacking from behind then thats a situational awareness problem and it's in your hands to keep up. The next step from this is first person shooter...
New camera rulez.
Put some more time in to it, I'm sure you come around soon enough.(I hope)