They should have that option, the Excelsior-class and the option to design its variants like the USS Enterprise-B version or the USS Lakota from DS9. Maybe they were planning it for the C-store anyways!
I'm all for it, but where should it go? Should it be a 4th ship alongside the Constitution, Excalibur, and Vesper that can be refit with pieces of those ships? Or should it and 2 other new, similar looking ships be included as an alternate tier 1 block of ships? Should it be introduced as an alternate tier 2 option to the Cheyenne, Dakota, and Stargazer block of ships?
All of the Enterprise model classes should be available. From the TOS Constitution to the Sovereign class version. Since Enterprise B wasn't ever given its own class specification, a modified Excelsior is close.