Adding a hotkey means adding data, the aim is to have a mod that don't have additionnal data and can be injected in a scenario.
I could add toggle based on the game, like if roboport is enabled or alt mode.
My original aim was that ctrl-click would build, so it's not automatic and I want the mod to go in this direction instead of a toggle.
it would be nice if i could hit the pipette button and hold ist and by hovering over the it would build the ghosts... because if i have large blueprints that i want to build i hit that pipette buton like an maniac :D