Nihl:
Thank you for your careful work in defining what seems to be the local descriptor for the (so-called)
laz bicaq.
As others have noted, your findings deserve careful consideration. The main discussants of this topic have taken a short holiday from the Forum, so it may be a while before they weigh back in. Please feel free to expand on your ideas in their absence.
Do we have any native-speakers of the Georgian/Laz language who might assist Nihl in his efforts?