It would be, but it’s doubtful. They’ve already doubled down that this is the look of the ship will have through the TOS years with SNW’s A Quality of Mercy, which reimagined Balance of Terror. Altverse to be sure but doubtful it’ll change the design of the ship:
Further, an animated Short Trek “Ephraim and Dot” postulated some robot was there during the Enterprise’s TOS missions chasing a tardigrade throughout the run of the series and kept the disco design before moving on to the movie-era one
Oh and now to add confusion we also have the Sombra-Class ships which externally looks exactly the same as the Constitution-Class.
However small kudos to SNW, is that this is a fine Star Trek money saving tradition (see the various versions of a Miranda Class starship with and without the rollbar, or sensor attachments, or Soyuz class ships)
Finally, they could have given themselves an out, sort of. Because during S1 of DSC they hadn’t actually settled on the look of discoprise (or, potentially had to be 25% different) they had shown us an on-screen display of Defiant after she’d been in the Mirror Universe for a while:
the nacelle pylons, especially were more in line with TOS (minus the elbow but I assume that was added after some time in the Mirror Universe) but the roundness was more Disco (and whatever those pizza wedge cuts were about). They could come back and and say different connies had different configurations and later changed them across to board to match the design that proved most optimal.
But that’s not gonna happen.
