I wonder what it would look like if the neck was connected to the spherical forward hull more centrally.
Mind just a speculation but that might offer the vessel the option of a 'spinal' mount weapon placement, the literal direct connection to engineering due aft for power and the forward facing discharge aperture of the secondary hull.
That said, one could imagine the truly upscaled-oversized phaser weapon that might be installed.
I've got the deflector installed in a spinal mount currently. If you look at the power system image the PTC that runs forward terminates at the deflector. On Monday I'll try to post some new images because I'm out of town right now and will get back Sunday night.