Tip for Reinhard firestrikes: When you have your shield up, be mindful of your crosshair placement, because doing so will allow you laser accurate firestrikes. Basically pre-aim your firestrike all day. I catch annoying ass snipers every time because they don't expect a perfect firestrike to their face when I'm shielding.
I had a hard time watching the stream for some reason (it kept freezing), so I only saw glimpses here and there. The only thing I caught was that you tend to be a more aggressive tank than what your team needed at that time. I do it all the time, sometimes we got to be patient when it comes to how the team wants to handle the encounters. Also, no one did anything to the real problem child of that team... Ana... that Reinhardt was destroying your team because he was getting healed hard by Ana.