Just to make one thing very clear: At the moment whatever "team" we have consists of a few modders doing whatever they personally feel like.
There is also one main modpack compiler (me) who easily needs 100 hours a day to get everything done.
So as nice as new ideas and feature requests might be, we simply do not have the people nor the time to make it happen.
In fact, there are a whole bunch of things already on my to-do list that I haven't found the opportunity for.
Most notably including all the latest modding work in the Beta 3.3 WIP files! But I haven't the foggiest when I might be able to
do something with that.
For ship repaints and uniforms, the answer is the same: There is what there is.
Not all ships have repaint options and not every rank has an officer uniform. Simply because those haven't been made.
And, again, for them to be made, that requires someone to actually
do the work. Unfortunately the work doesn't do itself.