They could decide to do a 2409-version of the Luna-class, and take the opportunity to revisit the default Luna model in the first place.
I made pretty heavy use of the Luna-class during my first year of playing STO. I'd be glad to see it get something of a facelift. It's always been of pretty average quality. While I never felt the deflector on the sensor pod was such a big deal (I excused it under the '30 years later' clause) it did bother me to see the ship with sloppy geometry around the front of the stardrive (which should have had a much more definite arrowhead shape) along with the odious addition of twin torp launchers on the 'lower lip' on the saucer's rim.