I was just playing the simulator, and I noticed that you can't make handsigns while on the move. It would be cool if you could sprint along and make them as you approach your target.

Also, in the future it would be cool if well known jutsus such as Chidori had their own 'special' animation. For example, when you activate a Chidori and run at your target, your lightning coated hand rips through the ground like we see Sasuke do. Of course, that's just an after thought. Not really important.

Hey, just made an account on here. Anyway, for the bloodlines, it would be kind of lame if they didn't actually give you a significant advantage. Maybe everyone should be able to obtain a bloodline, but it's extremely difficult. (A long line of quests, or a difficult boss)
That way, they could have a more substantial impact upon the game.