My suggestion is a tool that will allow in a simple click on a construction element, to modify the texture, the color and/or the texture scale. It would take some UI to specify the value you want.
This tool would be extremely useful when you want to edit the color or texture of many parts, to create some color variant of a flower (or anything else), you will have to recolor about 100 parts for my roses.
it would also be very useful for repairing bluprint imported from java. The result of several conversions are perfect, but some bigger buildings need some love and it would be nice to have several tools in the hotbar to quickly fix different elements while progressing in the build