I feel like a couple years ago, maybe even as recently as this past offseason, there was discussion on this board about Simmons' possible fit on this team, perhaps via a trade with Smart as the centerpiece. At the time, IIRC, the feeling was that Simmons was the better defender and better passer, and his reluctance to shoot from the outside would be a benefit on a team with the two Jays.
A year later, Smart seems to have improved both his defense and his passing, while reducing the number of 3PAs. Meanwhile, the questions about Simmons' heart, where Marcus clearly had him beat, have only gotten greater, so much so as to pretty much nullify, in the views of many, any positives that Simmons could offer.