I decided to lay my pebble watch to rest, so now I am motivated to make the SMA-Q2 firmware actually useful.
I have designed a new watchface including current weather form Gadgetbridge. I have also added basic music control support, although the song info is not yet transmitted from the phone. That is because I need to decide on a protocol for transmitting large packets of data.
Along with those updates, I have also improved the current consumption, mostly by redrawing the screen only when it is needed. Consumption now oscillates around 1.5mA which should give about 5 days of battery life.