Funny thing is all they need to do is tweak the prometheus Bridge and voila! Excelsior bridge.
Indeed. In fact most of you probably already know this but the Prometheus bridge is a redress of the Excelsior bridge that they made for the Voyager episode "Flashback". Additionally the Equinox's bridge (Nova class) is a redress of the Prometheus bridge with the Voyager style Captain/First Officer seating assembly.