[CA] [CA11] Evolution control head question/LH compatibility

[ddorsett]

Upgrading my ~2000 vintage autopilot (twin diesel inboard), Current 12v type 1 pump/rudder sensor should be good with new system. New computer ACU-150 or ACU-200, have gs165 with LH3 (for Quantum 2) , which is where the question is...
Website says "Note that your multifunction display must be running Raymarine's LightHouse II software and that some autopilot functionality may not be available if your system does not include a dedicated autopilot control head."

1. Is Evolution really not compatible with LH3? If not, when??
2. What EXACTLY is the autopilot functionality that may not be available if I just go with my MFD to control the ACU and skip a dedicated control head (why waste the space??)

Thanks,
Dave