the challenge for ai now is to defend and improve on her results last year. i read somewhere on this board that ai isn't planning to resume her schedule until the middle eastern tourneys start. she did well at the euro indoors last year - qf in brussels and 2nd round in paris. so there'll be plenty to defend.
i think ai will be relatively safe until scottsdale. it seems as if she's doing a lot better on indoor carpet and clay since last year. after indian wells, she doesn't have much to defend until the italian open.