Heck, yes--I miss the sence of normalcy she (and sometimes Casey) provide.
The same could be said of TMNT 2k3, at least initially. By the time the first season ended, only four females of note had been introduced: April (regular); Angel (one-shot); Quarry/Sydney (assumed male during most of her appearance; appeared as female for less than three minutes); and Abigail Finn (one-shot). Fast Forward, in comparison, had three female characters of note: Starlee, which you mentioned (recurring); Viral (recurring, and killed at the end of the season); and Starlee's mom (one-shot, and the less said about her, the better). Looks about equal to me, the only difference being that TMNT 2003 had four more seasons to add female characters to its cast, while Fast Forward just had the one.
Actually, her last appearance was later on in Turtle X-Tinction, although she did little of note there, save planning to take Cody out to the movies and getting knocked out by Turtle X.