T26 is already CODLOG, but I agree with the rest of your points.

Correct. Apologies, meant to suggest a CODAD as opposed to CODLOG, assuming the system still meets power generation requirements. The acronyms can run away from one sometimes.

To be honest, I can't really see how a new design is going to be much cheaper than taking a T-26 hull, swapping the CODLAG system for a CODLOG, squeezing the MK41 VLS down to maybe 16 cells, not bothering with torpedo capability and using the T-23's 4.5 inch gun. These would effectively be the GP T-...