Why not merge AS + NW + CO into a holding company, keep the various brands where appropriate and start to slowly integrate the products together?
For example, if NW is known in Asia have the planes based there say Northwest - part of the blah group.
Likewise if AS is known in the SEA area why not have the planes there keep the AS scheme?
Ditto for IAH/EWR.
At the same time 'synergies' can be reached by standardizing the product (i.e. a single NG BC is chosen for this entity to replace WBC and BF) and a new domestic F product is chosen to go into the domestic planes.
CO & NW can exapnd upon their already profitable codeshare with AS helping to bolster up the Pac-NW [a]and[/b] this entity can continue to leverage (that is if the anti-trusters don't shoot it down) the code-sharing with KLM.