Only works if
... it takes place during the height of the Cold War (1950s and 1960s). Which means that even young Bruce Wayne from this show would be an old man by now.
No matter when it takes place, they're going to screw it up and might as well quit now while they're ahead.
You know they'll push the weekly easter eggs. Thomas Wayne encountering Jonathan Kent. Alfred somehow how knowing the Flying Graysons, the Waynes doing business Ferris Aircraft, Edward Nigma, Oswald Cobblepot, or the Joker being connected to Alfred somehow, etc.
I never saw Gotham but I'm sure all this has been done before.