fdcg27,
That is a very good post. You are exactly correct on all counts.
IMO, those points all make the case for long range twins - 787-8 size and up - serving point to point or hub to point markets.
An interesting parallel is with the "RJ revolution" in the US which is unraveling as a successful point to point aircraft. The reason it unravelled is because the seat economics are horrible on RJs. The newest generation of medium size twins (787 and A350) have excellent seat economics.