This is a different perspective that I have offered on this and other threads.
One of the great advantages to me of the original DIs (w upgrade) is that they contain defined speaker types that can be purchased directly on the open market. I have done this and rest comfortably knowing that any replacement part is as close as the garage.
So I would not have any interest in the upgraded SE model regardless of any sonic advantages. Those Thiel owners complaining of a lack of replacement transducers on this site illustrate the innate problem with custom speakers available only from the maker.