Indeed.  All plans end up with a smaller Delta.  US will shrink DL by 10%.  Any white knight will do the same or more.  And to end up independent, DL management will need to shrink to project better operating results.  
A smaller Delta?  How can this be when you're adding the current #3 and #5 airlines?  There can be a reduction in the total number of aircraft for the combined carrier with very little impact.  For example, each carrier has 8 flights between CLT and ATL, meaning the "new Delta" will have 16 flights between these two cities.  Reducing service by 10% still leaves at least 14 flights a day, versus a stand alone Delta in which a 10% reduction would have roughly 7 flights a day, don't forget the competing Shuttle service either.  
Here's the synergies...the "new Delta" will be much larger than the current Delta, just look at the number of aircraft: 457 (Delta) + 357 (US) = 814 aircraft, minus 10% is roughly 733 aircraft for the carrier.  Seems like it's grown in size rather than shrunk.  But then again "no child left behind" has done wonders for math skills.