By accident, I found a newspaper report that describes the extreme likelihood of a massive rockfall, caused by the collapse of the summit of DL/AL-030 Hochvogel. They expect 260 000 cubic meters of rock to come down either this year or early next year. Here is the report (in German):
The summit has been activated four times:
So my guess and recommendation is to rule out this summit from the list of potential destinations. Maybe @DD1LD can share his experiences from the ascent in September.
73 de Martin, DK3IT