SamyGO

You can use putty or another scripts to automatize steeps you need. I think it is not hard to do and time is enough to get console unlocked and even samygo.sh file deleted automatically.

Bad that I don't have such a script, but will research. Might here is user who can make script or simple app for you? All what is needed is to send some commands to terminal. I know here was the app for B550 CI+ and did the trick well. But must be adapted for B650...

An app starts terminal and sends there key inputs. As result - full unlocked shell and then additional command to kill exedsp and remove /mtd_rwarea/SamyGo.sh. This could be done.

Yes, this could be good choice
I dont think they find if you dont tell anything about that. Usually they dont search, just replace mainboards...

Well, this is really good

i think you could post your macro and how did you use it, this could really help others.