Re the cupola:
Yes, that fix looks good. But (on 131 at least) they didn’t bother to keep that rainwater hole open. They just piled the weld on top of it.
Re the loader’s hatch:
When locked by its arm, it stood exactly vertical. I have lots of photos of this.
In 1944 they added a thicker roof on the “Late” Tiger, and everything changed in this area, and that’s when you get a lock that leans the hatch forward.
David