Boeing 7E7,
Don't forget people, that the present 12-14 year wait for a command is based on TODAY. In the future it could well reduce alot.
It is more likely to increase. At present the BA retirement age is 55. It is likely that a legal challenge will change it to 60 in the near future. That will add 5 years to time-to-command (assuming that all those approaching 55 choose to stay on until 60)..