Except every iron mission gives attributes at 100 and 1000 and most give attributes also at 500 and 5000. For older avas attributes are a lot more valuable (harder to obtain) than some skill points. However, I like the Arkadia missions better because you don't have to worry about wasting attributes as I said above.
audrey, they arent wasted, they are not even avaliable. if they were avaliable and u did it u might look at it as a waste, I know for my avatar, I did a mission that said i would get 1 strength but when i finished it i didnt get 1 strength, i got experience toward a stg. point. I am not certain but i think that is what happens with attributes once they get higher. it may have been a bugged mission and i just got screwed out of the proper reward on the other hand.
Hmm, I never saw anything else than a full attribute point as a reward even above 60. Let me make sure I was clear on the wasted part: If I do a mission that rewards an attribute point in an attribute I am low on (say, below 50) I personally consider that point wasted. I could have done that mission later when my attribute is a lot higher. That keeps me from doing certain missions. Missions that award skill and not attributes make me a happy camper because I don't feel like I wasted an attribute point. Sorry, I don't want so sound like a broken mp3. Now bugged mission rewards, that's a whole different mob! Maybe you should open a support ticket.