I stated that once the terraces fail there will be tsunamis and I think that needs to be evaluated with Thwaites.
Ice by scientific definition is a rock. Glaciologists fall into a category of geologists. But, in the case of Antarctica there is the issue of the windward currents of the ocean. That brings oceanographers into the picture. I am sure there is a paper somewhere in the literature or "in the works" to determine the potential of tsunamis with loss of Antarctica ice abuptly rushing into the sea. Up to now most of the measurements are to ice loss, hence, the thermostat of Earth. There is another element that can begin to be understood and that is the ice cores of which global scientists have in their possession. I believe the Russians at Station Vostok have a full depth ice core from their drilling right down to Vostok Lake.
The ice cores are usually used by palentologists to examine the past. There is a lot of history in those ice cores where it is not found anywhere else, namely greenhouse gas content of the atmostphere. But, there could be more in relation to density at depth and and boundaries/borders between that density. I would think the heavier the ice in density the more stable it would be, however, there is the "topple" issue.
Basically, what I am thinking is that ice cores can be examined for the ice density, weight of that density and the height of that density. If the higher densities are lower they will topple or slid from the structure, but, as the density is greater and the weight of ice greater at depth in the ice cores that might remain on land and not topple so easily. This is something that has never been assessed to my knowledge.
With Thwaites being a WHEN it disintegrates and not IF; the idea of the volume of ice loss on the land of Antarctica and method it is lost is vital to warn people of the danger considering if there is any significant solid ice that either topples and/or slides into the ocean surrounding Antarctica what size tsunami will be generated.
All this is a huge question and requires scientists across disciplines and countries to work together for answers. We are talking about the lives of people on Earth and if any one country refuses to admit to the danger and refuses scientists to knowledge there is always The Hague. The World Court would be delighted to stem the loss of human life and not just punish after the fact.