Adding a few KX-series security droids on the Death Star wouldn’t hurt.
I am very conflicted about this suggestion. (and by suggestions like this in general) On one hand, I don’t want to see Original Trilogy changed too much, I mean, that’s what George Lucas did and he almost ruined the Original Trilogy by adding random nonsense to it. (that’s why we are all hoping Adywan will someday edit prequels and make them more like the original trilogy in the first place)
But on the other hand I really liked K-2SO in Rouge One and it kind of makes sense to see KX-series droids on the Death Star. (and the design of KX-series makes much more sense than say… that torture droid with a weird needle for example.)
In the end, it will be up to Ady to make that decision and he is known to add things like these when it makes sense. (He added a battle droid head to the scrap inside the Sandcrawler for example.)
So just maybe we may see a KX-series droid in the Death Star scenes, probably in the background during in ANH:R-HD. Just maybe.