Great thread,
Kiwi Flyer. ^
Just a quick comment on UA at this time:
UA upgrades possible are econ->econ plus, econ->biz, econ plus->biz, biz->first, econ->first (on 2-class a/c).
You could change that to
econ->biz, biz->first, econ->first (on 2-class a/c)
At this time there is actually no distinction between E+ and E- for upgrade purposes. Additionally, there is no mechanism for going from E- to E+ (the latter is given to all MP and *A elites and pax on Y or B fares), although there are some rumours that this may change.
In short, E+ and E- are not separate classes of service, simply different seating areas--more legroom being the differentiator.