Well the fact that the story says "Carrotus will be doomed if you [fail]" seems to imply the turtles are intending to do SOMETHING nasty with the Gates of Tartar Sauce. But Jazz DOES kill some turtles without need (which makes me wonder why he didn't finish Devan off in the JJ2 ending while he had the chance; it wouldn't be out of character) and the JJ1 manual even says the Turtlettes are just baby turtles looking for something to eat. (Paraphrased, but that's the gist of it)
Oh, and as I learned from my dead Quake-O-Matic Quandary episode is that public beta testing generally doesn't get that much response. (Although Cooba and Littlefreak were very generous with their time and suggestions, for which I thank them) You'll probably be best off with private beta testing.