Could be a straight up increase or a tech or something, but the antennas are kind of painful to use. For example, I should be able to control all the parts of FBR cycle with one controller but it takes 3 because of range.

Would also be nice to know what the range is somehow to know what is covered when placing the controller. Like what was done for the wind turbine mod where it shows the area that will be blocked when placing

Yes, the range detection would be good to be detectable.
I'll try to look, if there will be option to add additional renderer or highlighter.

I'm trying to investigate how to make the mod now easier to use for longer distance connection.

Now is in development a bus system, that is able to directly point to near controller without need to select it directly on the map.