So this thread had me looking into doing some coding. Here is the list of things I have found that I want to do so far.
Double Blink Hazards
Remote trunk close
Disable iDrive Disclaimer
Remove IDrive warning when starting the car
Complete wiper cycle
Angel eyes brighter
Seat Belt Chime for Driver disable
Couple of other things I was wondering about though.
Can the passenger side seat-belt warning be disabled? (Annoying when laptop bag sets it off

)
Can you have fog-lights always on when low-beams are on? (auto or switch, again annoying having to turn on separately)
Can you disable the directional fog-light turn indicator? (Dumbest thing ever, looks like one is burned out whenever you turn

)