It needs to be repaired again, simply because it's succumbing to the weight of its parts and the ravages of time.
The next paint job should, obviously, reduce the "weathering" some and make the hull plating lines much more subtle than the current version. The top of the saucer is the only part of the model that hasn't been substantially repainted more than once; it's the appropriate reference for the colors to be used on the rest. Ideally the shape of the "antenna" (it has another name, but I forget) in the center of the main sensor dish should be corrected, and I think there's some very small joke signage on the ship that should be restored to whatever the original labeling was, if they can research it.
That's pretty much it.