I see the repeated suggestions to play the system without alterations before attempting homebrew fell on deaf ears 
If you’re really set on blind homebrew though, some advice:
- The limitations are potentially very dangerous for balance, and feat points are worth a lot more than you seem to think. A free feat point in exchange for taking a small amount of damage on 5% of your rolls with a single one of your attributes just isn’t equivalent. 3 bonus points at character creation is going to leave the character with these limitations essentially a whole level ahead of the character who didn’t take any.
- Burnout and Exhausting seem kind of unfun. Burnout makes the drawback on your super cool ability… the inability to use that super cool ability, which is a boring kind of penalty because it makes interesting stuff less common. Triggering Exhausting is similar, in that if they accrue too much Fatigue from it they will both not be willing to risk using that attribute and also be paying the penalty beyond that.
- A complete reshuffling of the Extraordinary attributes is actually a fine homebrew. It’s an enormous amount of effort (which I suspect you’re now realising having gotten about 5% of the way through a single attribute) but besides being a monumental task given all the work defining description, banes, boons and feats I weirdly have no problems giving this the go ahead. Just try not to overload any one attribute with too much power and you should be fine. Good luck, and do update us on the project as you make progress (maybe you can get some vanilla games of OL done while you’re toiling away
)