Agreed. E+ would simply be a fourth product. Where is it written in stone that three products is acceptable in terms of operational simplicity but four are too complex? Especially if that fourth product can be effectively targeted on the ultra long-haul routes (777 & 787's only) in order to meet demand and make a profit for CAL.

Also, in terms of the numbers of products CO offers, you left out one more variation a la Hawaiian BF, this one the "International First Class" which is offered to the Caribbean and northern Latin America which features BF service but on domestic FC-equipped ships.

So the fact is CO tailors its product to its various markets.

An E+ on ultra long-haul and even TATL would effectively meet the demand in that market place the same way that having BF service but on a B73NG is appropriate for northern Latin America.