You can do a lot with MUT + etacsdecoder software. For example:
Folding mirror enabled (need to buy oem folding mirror assy + wiring), open mirror when speed above 10kmh or so.
Enable and disable tpms.
Enable and disable seatbelt warning.
Enable and disable RLS (rain light sensor) for auto wiper + auto lamp (need to buy windshield with RLS mounting, RLS sensor, auto wiper stalk, auto lamp stalk, wiring).
Reverse warning (make a sound when you put gear into reverse position), quite useful for novice driver.
Enable and disable auto climate (for retrofitting auto climate)
Etc.