Hmm, well I don't have the card so have no feedback but maybe you'll get a response if you have a specific question. Feedback is so subjective to how each specific person would use the card it might be hard to respond...
Basically, evaluate the card for your purposes. What are your travel plans for the next 12 months? How much would it cost without the credit card on the cheapest airline you could fly? With the credit card (remember you have to fly AS)? The $75 fee is a turnoff if you don't plan to fly AS often enough to cover the free baggage benefit and/or if you don't have a companion who would be taking advantage of the companion offer. Basically: run your math and see if it will help you in the next 12 months and if it will be worth the $75 fee.
You can also check out the "i love credit cards" thread here on the budget board, the AS CC is definitely a lesser-used card but someone over there might have it.