Just reading from the hero picks, I didn't go to the in depth part of your team.
I think kael/jaina is a little to much + in TL it often happens that your heroes also get picked by the enemy. I suggest having so alternatives to jaina and kael. I think a hero like nazeebro would really excell for you guys as a team. If you take the ghost ultimate he can just stand in the back while u lock down targets and pew pew. I'd like to hear what u think about this, bcs jaina and kael are picked extremly often