I like those dresses, and would definitely download them for my simmies, as is!
As for more colors and patterns and whatnot, I agree with Millie about feminine, summery patterns. The PPL one is kind of bright, which in my head equates to summer, so some bright colors would not go amiss in my game.
But if you released them as is and never touched them again, I'd still love you forever 'n' ever.