Re: How long should the new series go on for?
I like how Nolan did the origin story and an ending story in his more down to earth universe. And it was done in a more cohesive trilogy, which was rather easy because it was so closed-off from the rest of the DC universe. This benefits the reboot.
Now this more sci-fi or horror (I hope!) reboot that is OPEN to a larger universe...they can do all the "in-between" stories and let it go on past a trilogy. Not making too many jumps.
From the post-origin stories in Year Two-ish all the way into a mid-40s veteran Batman who is working with Robin.
They can deliver 6 movies and it would be fresh, of course they would need to recast.