Another thing I'd want to change would be the K'Tinga Battlecruiser.
The basic design I like, I just don't like the obsessive degree of surface detail added by Mr. Trumbull. The design should be smoother and less detailed. Instinctinvely, I'm thinking something like that DS9 Episode when they went back in time to the "Trouble With Tribbles" episode -- the re-done CGI on the IKS Groth showed more deflector gridding
(well it's actually more faceted shapes, but you know what I mean).
HERE is an example
I would still prefer the grayer finish used on the TOS and TMP set-up. It looks better.
The longer nacelles the D-7 K'Tinga has I'd like to retain and I wouldn't mind having them glow in the inboard area.
There are parts of the ship I'd want to change, basically the first thing is if you look at the front of the ship where the torpedo tube is, there's an etching around the tube. I'd want to change that etching into part of the navigational deflector system along with some of the "dent"
(torpedo tube) with the torpedo launcher being right in the middle. Since the Enterprise's torpedo tubes are quite small, I don't see why the Klingon design would need to be so large. Considering the shape of the concave dent (circular) I'd prefer to have Klingon torpedoes have a cylindrical cross-section.
Since it would be kind of weird for a ship like the K'Tinga to have no shuttlebays, and putting the shuttle bays up on top of the box-section of the hull (the part with the vents in the front) is not entirely to my liking -- it looks like there would be important stuff in that box-structure: I offer two solutions
1.) The K'Tinga drawings often show cargo-bay doors on the front of the inboard wing structure. Those can carry a shuttle...
-Launch is simple: Just rocket out the front
-Landing can be done by getting in front of the bay and then slowing down, or allowing the D-7 to overtake. Tractor beams can also be used in the process
2.) The original D-7 from the TV series had a single vent where the impulse drives were supposed to be. It might be big enough to house a shuttle. The main engines can be configured how they were on the K'Tinga (on either side of that location) which would pose no problem to the best of my knowledge.
The rear torpedo tube set-up doesn't require a large dent like in TMP and frankly I don't like it. The tube need not be that big. In fact looking at the Voyager episode "Flashback" when they beamed aboard the USS Excelsior while it was transiting the Azure Nebula, there was this one image of a K'Tinga...
The torpedo tube could be fitted on the lower part of that cruciform structure in between the engines
(and as an interesting note, if you removed the part of the cruciform structure covering up that rectangular door like structure on the main hull which on the standard D-7 from TOS, you would notice that was where the original impulse vent was located -- it could be the shuttlebay -- and mount a rear torp just below)