ETOPS - Good spot! Especially as the helo connection is sadly history.
You must be lucky with shuttle reliability. Last year I sat in T5 while the first wave of snow came down and watched the domestics vanish from the board; earlier that year (or maybe the year before) Swannage radar failed for a while, and again the domestics vanished. A year or so earlier I was on board shuttle whose starter failed - I ended up on a later flight and on the 0215 boat home - not my best travel experience! I must be a Jonah.