I've been saying this for a while. If we increase the size of all the TOS and TOS movie ships (including the Constellation class) to scale with a 442m Constitution class it matches the interiors in the movies better, matches the early effects from TNG, removes the huge size jump from the Ent B to the Ent C and then makes the Sovereign class the perfect size to be a replacement for the Excelsior class as they aged out of service. (The Excelsior II class from Pic could be a simpler and easier to build replacement to complement the Sovereign and make up for losses in the Dominion war).
A quick calculation makes the Excelsior 723m at the new scale, compared with a Sovereign at 685m That would work, the internal dimensions of the Excelsior are still smaller than a Galaxy, and probably an Ambassador.