Mo is an absolute pylon in his own end. He's only really good for puck movement and there's enough of that on this team.
Then why is Chabot there, he's even more clueless in his own zone than Rielly. To add (this isn't just my bias) but I think Rielly is being severely overused in TO and the pressure is starting to get to him... Going from playing upwards if 28 mins a night to 18 will allow him to play better.
Hamilton does not make this team over Theodore, Pietrangelo, Ekblad, Chychrun, etc. With Makar you already have a solid PP qb and Hamilton is nowhere near good enough at defense to make this team