The school I worked at that had them you got issued your own number and it never changed.
Ref leaving the cockpit the way you found it.
Unfortuantely thats the law when you sign for the aircraft. If its not set up right and you have an incident due to said settings it isn't a defence to say the previous pilot had changed something.
And the Flight ID is one of the ones I always check on the taxi out. And 8.33 is easy to spot because you gain a digit. And it really wouldn't bother me to be honest what you changed on a G430 as long as the radio worked.
Turning off the flight timer would get some swear words said on the first sector but thats about it.
EFIS machines that I flown default back to a standard setup on powerup and if flight crew go into the maint jumper settings they will get there heads kicked in by the engineers. GA type stuff like G530 is alot more user configurable that multicrew EFIS systems which defaults are set by software uploads across fleets.