Fun moment:
The most recent Star trek television series (Discovery) had me ending up being more interested in watching again all the old stuff than the actual new episodes themselves. So among the various things I also ended up thinkering the reboot movies Enterprise, colloquially called JJ-prise or Edselprise (the latter mainly by those who were not happy at all with the redesign).
Personally I'm fine with this redesign, but I had always thought it could benefit from some touch-ups in order to adress some weird proportions in the the ship's overall lines, mainly the results of, according to those who worked on the new designs, "JJ wanting it to look like an hot-rod". For my own personal tastes, the secondary hull sits a bit too far forward, the front end of the nacelles is a bit too fat and they are a bit too close together.
Luckily, since Karle94 drew the Kelvin-timeline Enteprise previously, it was just a matter of a few hour of pixel-fun to do the modifications I wanted.
Obviously, the spacing between the warp nacelles cannot be glimpsed in a side view, but it would be easily addressed by angling the pylons a bit more or making them going out straight (like on the new Kelvin-timeline Enteprise-A seen at the end of Star Trek: Beyond.) but everyting else is here on paper.
first of all, a link to the original by Karle, both as a nod to his work and as a quick comparision tool:
https://i.imgur.com/1YGL5i4.png
Then my take:
I moved the engineering hull back by 6 feet (1.8m, or 12 pixels) in relation to both the neck and the nacelle pylons, so that the shuttlebay sticks a little bit more at the stern.
Then I shifted the entire neck-engineering hull-nacelle pylons section back by 15 feet (4.6m, or 30 pixels) while leaving the nacelles themselves and the saucer section as they were.
Next, I slimmed the underside of the warp nacelles, making their front part less massive. I initially thought abut trimming down the "hood" part above, but I realized the nacelles now looks fine like that, and moreover in the front part they measure exactly 94 pixels both above and below the centerline. totally fine!
Finally, while retaining mostly the cutout curve on its underside, I beefed up a bit the lower part of the engineering hull, trying to fix that sensation of unbalance it had (for me) for being apparently too small compared to the nacelles, neck or saucer.
I also did some touch-ups here and there, but mostly just for cosmethic reasons.
Ah, right, RED bussards. Obviously.
Needless to say, I tried to retain all possible lines from the JJ-verse Enterprise in order to not mess up the general look of the ship. Just redoing everything randomly only to get something that looked close to the original design by Matt Jeffries would have been pointless since we are talking about a reboot that takes place in a different timeline as well...
Hope you liked my 5 minutes of fun, opinions are welcome.
Disclaimer: the first who comes up with the Enteprise scale issue will be greeted with a salvo of photon torpedoes 
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