She was my go-to in S2, but she's just not as fun or effective in S3 for me anymore.
She's obviously not on the docket for a kit rework seeing as she's still viable, but I think Riot could give her some love in the distant future to make her lovely again.
She IS one of the oldest champs in the game, and like Soraka her gameplay design isn't as sophisticated as newer supports like Lulu and Thresh.
I think her Q CD should begin on the first cast rather than after the second proc. A fully charged Howling Gale is near impossible to land, so doing this would, like they did with Lux, reward her for strategically timing her casts rather than double clicking Q almost every time.
+Another thing they could do is decrease the initial AP ratio, but give the charges an AP ratio.
This would be really hard to balance, but it would skyrocket her fun-factor if they implement a 2 charge zephyr system or something.
Like she gains a Zephyr every 12/11/10/9/8 seconds, and each one increases her Msp by 2/3/5/6/8%. AND she can use one proc to either deal 30/60/90/120/150 (+.25) damage and slow for 20/25/30/35/40% for 2 seconds
OR she can use one to heal an ally by 15/30/45/60/75(+.125) and haste them by 4/6/10/12/16% for 3 seconds
This stuff obviously won't happen, but I can dream of Zephyr town.