Eventually yes, for now no. It'd be a bit silly to revert his ability so quickly after taking it way. A year or sooner from now I wouldn't be surprised if his powers were back though.
When it comes to the animated films by DC it simply comes down to budget every extra minute costs them significantly more then a live action film. I'm sure Bruce Timm and Sam Register would like them longer from 10 -20 mins more but WB is trying to make the max profits. I do agree that they could be longer and it would benefit all the films they've released.
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