One thing stands out: I really like your placement of the phaser banks.
That's one major flaw in the TOS-Remastered imagery: the phasers are too close together. The original imagery had them further apart:
And it makes sense from what we've seen of Auxiliary Control (corridors and all) that Phaser Control room that's apparently nearby, they must be on the same deck. Is your bottom saucer deck big enough for both, plus the corridor?
My assumption has generally been that the phaser emitters themselves are movable within that ring. Might even be more than two (at least the capability is there, like if you have a ship with a more overtly military mission profile).