Executor_Aeternus

If it helps, you should know that in Steel Path, enemy spawn rates during Endless missions are increased as if playing in a full squad in normal mode. It doesn't modify non-endless missions though, and the Steel Path modifiers require the solar map to have been completed before being able to access this mode. As such, there's nothing equivalent available to players still working through the solar map the first time. I agree with you; a toggle to increase spawns appropriately would be nice.