Souza has improved his striking a lot. I don't really think Chris striking is great yet. He is pretty creative tho like that nasty counter elbow he hit munoz with.
Machidas footwork is just too much for Chris to get off on the feet I think. With machida he'd need to smother him and work some ground and pound.
Im not a big Kennedy fan but he is pretty well rounded and think he'd make an interesting match up.
The middleweight division has never looked this stacked imo.
Oh and call me crazy but id like to see Chris rematch Uriah Hall if strings up some wins.