I think the Batman that was presented in the JL Animated Series was the best way to go about Batman in a team. He is paranoid, closed off and doesn't trust anyone. But he reluctantly works with the team. He knows all and is quick to correct others. Less is more with him in the Justice League.
You have Cavill who should be driving a JL movie instead of a Batman. WB only knows Batman and tries to drive him into almost every IP. Cavill's Supes could have been the soul of the JL driving them towards doing the right thing. IMO, it all kind of went downhill with Superman snapping Zod's neck. Just not the right approach for a general audience to grab onto. Not debating the choice in that selected moment, but just too graphic novel material for a franchise to grow with.
You have Cavill who should be driving a JL movie instead of a Batman. WB only knows Batman and tries to drive him into almost every IP. Cavill's Supes could have been the soul of the JL driving them towards doing the right thing. IMO, it all kind of went downhill with Superman snapping Zod's neck. Just not the right approach for a general audience to grab onto. Not debating the choice in that selected moment, but just too graphic novel material for a franchise to grow with.