the (TOS) Enterprise is Constitution Class and the (Movie-era) Enterprise is known as Constitution-Refit... anyway, in regards to the interior design elements of the Enterprise-J, it appears to be heavily influenced by the Cardassians (looks similar to DS9 anyway)...this makes sense if the Cardassians joined the Federation... as for the saucer design...the Enterprise-J appears to be a large ship, like the Enterprise-D so spaceframe-wise it makes sense that it will have a similar design...it's large, sturdy, and can accomodate a lot of people/supplies/equipment...this ship looks like it was built for exploration/long-term missions...the "modern" ships have sleeker, pointier saucer designs because they're built for speed and action...also, it looks like the deflector may be mounted on the front, which leads me to believe that it might be used for slipstream; the smaller nacelles may be for short-distance warp drive when the slipstream would be impractical.... now, one thing that really bothers me is the location of the corridor...it appears to be located underneath and almost behind the saucer, implying a secondary hull/drive-section...but for some reason, the curvature of the corridor looks wrong...it makes the scale of the ship look smaller when compared with the view of the saucer out the window (assuming it IS the saucer)...it just looks like it shouldn't be there... well, that's my 2 cents...