Just to answer some of the sugestions.
Cool stuff. I think the nacelles are WAY too close together, imo.
The are in proportion with the JJPrise, which are closer together than the traditional connie.
something about those pylons... they look too thin towards the hull.. like it just looks weird to me from the side, maybe not such a drastic curve there?
The thin part of the pylons are as thick as the JJPrises are at the base. I have added a curve whereas the TMP connie has no curve.
You could change the bridge module, because I would doubt that the JJrefit will have an identical one to the prime universes Ent-refit.
The bridge, array and impulse engine I borrowed from my refit, they were only ment to give an impression and will be replaced.