Were they the point of no return or did they just soften up Georgia for the Timurids?
Georgia had mostly recovered by the 14th century so a lesser Timur would have allowed for a lot more Georgian success in centuries to come instead of becoming a fractitious bunch of vassals. I think Russia would've been happy to ally with them given their own animosity to the post-Mongol states. At this point in time, many peoples of the Caucasus who later became Muslim still had a large Orthodox element that only the Timurid invasions erased. So what Georgia needs to do is maintain itself as a center of Christianity (including sponsoring missions to tribal lands nearby), ally with the Russians and Balkan states, and navigate the difficult political waters.
Georgia is pretty much the natural cultural center for this considering their historic role in the Caucasus, and how the Christians among the Alans, Circassians, Vainakhs, etc. both looked to Georgia, borrowed from their language and culture, and even to a degree used Georgian script to write their languages.
