Your suggested approach was exactly what I did when I had gone through a similar system in Myanmar as the OP described above, where lazy teachers leave managing the class to students among themselves.
Stay as neutral as possible so that it doesn't bite back at you when the name-taker is someone else. It worked for the most part because my classmates would start recommending me to be the name taker and in return, I told them to not make too much noise when talking during teacher's absence.
Stay as neutral as possible so that it doesn't bite back at you when the name-taker is someone else. It worked for the most part because my classmates would start recommending me to be the name taker and in return, I told them to not make too much noise when talking during teacher's absence.