I think this is exactly what Disney is trying to solve.
The current meet 'n greets are a dead end. Little children waiting in a boring queue for an hour to spend ten seconds with their favourite character. So daddy gets to take his snapshot.
The new 'attractions' are not a poor man's rides, but 'NextGen' meet 'n greets. Instead of a line, kids get to amuse themselves with colouring books or learning a play. Then they have some quality time with a character. The parents get to take their photographs.
The new princess meet/greets solve the same problems, in the same manner, as the new dumbos do: that of the smallest guests standing in the longest lines for the shortest experiences.
Presuming that only 'action' pictures are allowed, and no individual posing for pictures, Disney could solve a major problem in the park experience for younger kids.
Seen in this light, I think the 'princess meet/greet + dueling dumbo' expansion shows a Disney heart, shows attention to customer worries, more than that it is exemplary of Disney failing to deliver good rides.
It also shows that, apart from TLM and some excellent theming, the expansion is not really massively interesting for those above the age of six.
:shrug: