Originally Posted by metaphysician
Eh, that's flooding a single movie with too many elements. Even if your rebooted setting does contain all of them, you'd want to cut away at least some of the ones that don't matter for the first movie's plot. Like, introduce the concept of multiple Robins, including the case with Jason Todd's outfit, but don't touch the Red Hood or go into too much detail about what Nightwing is up to. Then you can continue from there later on.
No my ideas were not for a single movie, but I hear your point. I could get over no Red hood/Damine Wayne/Rah Gul. But I still think they Should already have a Robin in rotation and Nightwing should be fully established.
The dynamic worked really well in Young Justice season 2.
Remember were try to avoid rehashing Nolan elements, so they should take a risk's and include Robin. He's as big a part of the Batman Mytho's as the Joker.