I have to disagree about Mary following Scherrie. Now there is a case to be made for Scherrie doing the entire lead of some of these songs, but for my ears, for a song to start off with Scherrie's bombastic style and then segue into Mary's more laidback attack, it just wouldn't work.

As for "This Is Why", I almost never allow this song to play. Mary is okay on it, but this would've worked so much better with Scherrie on the entire thing. I also think the track needed a ton more punching up. Even the album version sounds somewhat like a demo to me. Starting with JML, I really feel like the 70s lineups were wasted at Motown. Somewhere else in someone else's hands, all that talent might have been consistently used the right way.