Regarding the concern about skipping to Damien for the DCU Batman, weren't there rumors (or speculation anyway) that Reeves may potentially introduce Dick in his movies? If so, it's possible his movies will establish Dick as Robin so that by the time we get to DCU Batman, time will pass enough that it's not that weird for some to use Damien because Dick was already Robin. And supposedly there's a Teen Titans movie in development, so Dick may even be Nightwing by that point.
Either way, I feel this is a bit moot, especially since we don't know if they will end up keeping their plans to use Damien. And I know everyone wants to be paticular about how they want to adapt things, but as we're seeing with Superman and Lanterns they're not starting on page one for everyone. The DCU they are introducing is already a fully established world of superheroes. They're not going to slowy build up to things by first using Dick, then Jason, then Tim, Stephanie then finally Damien. Not mention they're not going to tell things the same way or the same order the comics did either.