I like it. However have armour just around key areas. The bridge module, all phaser arrays, the main impulse engine, and forward and aft photon launchers.
I'd extend the armour on the engineering hull spine to include the main impulse engine.
I'd remove the starboard and port plating on the top of the saucer section so just the bridge, top of the shuttlebay, main phaser array and impulse engines are covered by armour.
Also I'd revert to the normal style deflector or how about an Intrepid styled one? And those purple exhast things below the main shuttle bay look far better the normal blue colour.
I love the bussard collectors!!!! However I'd scale back the armour on each nacelle. Perhaps having the phaser implacements armoured then hanving a central spine running forward.
I think at present she looks too much like a heavily armoured battleship rather than a beautiful ship of exploration with better armour for protection.