Here are the features from the MSFS AAU2 update for the 747-8 that I think should be implemented in the CaptainSim 777:

Highly Detailed Avionics: The 747-8 received brand-new highly detailed avionics. This could be a valuable addition to the CaptainSim 777, enhancing the realism and immersion for users.

Updated Flight Models: The update included updated flight models for the 747-8. Implementing this in the CaptainSim 777 could improve the flight dynamics and overall performance of the aircraft.

Comprehensive Systems: The 747-8 update included comprehensive systems. Adding similar systems to the CaptainSim 777 could provide a more authentic and engaging flight experience.

Advanced Flight Plan Support: The update added advanced flight plan support, including arcs, radius-to-fix, intercepts, holds, procedure turns, and missed approaches. This could be a significant upgrade for the CaptainSim 777’s flight planning capabilities.

Integrated Avionics Checklists on the MFD: The 747-8 now features integrated avionics checklists on the MFD. This feature could be beneficial for CaptainSim 777 users, providing easy access to important checklists during flight.

Visual Overhaul of Avionics: The update includes a comprehensive visual overhaul of avionics for accurate font, symbology, look, operation, and feel. Implementing this in the CaptainSim 777 could enhance the visual appeal and realism of the cockpit.

Please do consider adding these features in future my goodman.