Diagram of a Full Flow Staged Combustion Cycle

Last month, I posted a simplified diagram of a Full Flow Staged Combustion Cycle that I made in SR2 on the SimpleRockets subreddit. I have since updated the diagram to tailor it to the SpaceX Raptor engine, complete with Augmented Spark Ignitors, an autogeneous pressurization system, Helium to initially spin up the turbines, and Nitrogen to purge the system. SpaceX will eventually (or may have already) swap the helium with CH4 and O2 to spin up the turbines, but I chose to use helium in the diagram because it has not been publicly confirmed that helium is no longer being used.

Any feedback is much appreciated! I am also posting the diagram on the SimpleRockets subreddit. Here is the link.

Red - Fuel tank/piping

Green - Oxidizer tank/piping

Yellow - Fuel-rich preburner output

Orange - Oxidizer-rich preburner output

Dark Red - Cold, gaseous Methane tank/piping

Dark Green - Cold, gaseous Oxygen tank/piping

Blue - Helium tank/piping

Purple - Nitrogen tank/piping

White - Preburners

Dark gray cubes - Valves

Light gray rectangular prisms - Spark plug and ignition chamber

Dark gray/light gray - Turbopump assembly (From left to right on the fuel side, Fuel pump, Shaft, Turbine)