i really love the Aegis Shield on the Odyssey for the looks of it. It adds beautiful elegant blue lines all over the ship there. But on the Vesta, theres almost nothing to it. The Vesta too has a very sleek design wich would benefetig massively from some more cosmetics due to the shield. Maybe something can be done in the future there?
I suppose there isn't that much of a change to the model, and even with the nacelle fix, it isn't that pronounced. I happen to like it though, it gives the ship a slightly more futuristic look. (Plus, when I enable the shield textures, it does appear as if the main deflector is turned "off", like on the Enterprise in The Wrath of Khan.)