Easy too look back at the past and thrown stones
Hindsight is a wonderful thing, moa999, why do you think your version of the past is better?
but remember that aircraft have substantial lead times and market conditions (eg. appropriate config for A380s due to GFC and the like) and delivery times (eg. 787s) or competitor activity (eg. startup of Scoot/AirAsiaX) can quickly change the right answer under long term plans.
wow!
tartare, I can't help thinking you are seeking assistance for essay ideas, possibly for a final exam or something similar?