I agree that 16 bit should be the default as I have also fallen into this trap a few times.
As a workaround I have edited the “my camera”_config.xml.default file in the .indi directory so it defaults to 16 bit. But this only works if you can install a new version of INDI without having to completely reinstall the image, as is the case with Stellarmate.
Wouter
Wouter van Reeven
ASI6200 and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and 5 slot 1.25" filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R