Because the first Windblade miniseries was rather good and successful at establishing her in the fan's minds as an interesting character? Or perhaps because she had a well-designed (if somewhat over-ambitious) first toy which was a strong seller and a highlight of the Thrilling 30 line?
I like Windblade, as do many others. Even Drift was well-written in MTMTE, up until the point that he left. Also, the IDW comics and modern cartoons aren't the sole province of 1984 nostalgic G1 fans. New is good. New prevents stagnation.