Great series of posts.
Here is an interesting article that is worth a read
Future Tsunami?
I should add that the island of Hawaii (the Big Island) is also susceptible to a landslide (from Kilauea volcano) much like the Cumbre Vieya Volcano. In fact, remnants of ancient landslide deposits are evident under the Ocean on the SE side of the island of Hawaii.
The problems are well known and in fact large tsunami are historically common. Indonesia suffered greatly from tsunami in 1815 and 1883 from waves generated by large volcanic eruptions and also from earthquake events in the area that have effected the entire region. This whole thing is very disturbing to me for a variety of personal and professional reasons. Will this event prompt some change? I think the answer is very little if any at all.
-Zeno