fwiw a micro sample feedback from PM's target audience - our 2 boys 5 & 9 - responded enthusiastically to the new sets, especially the projectile-spewing weapons and new towers. In addition, they have seen Mega Block's castle/dragon theme on the shelf for the umpteen time and it doesn't have any draw.
They also like the various novelties on the latest pirate ship (hide-away canons, etc) for the play factor (likewise the upcoming Egyptians) - so in a way PM looks to be successfully catering to their target audience. The older one though has an eye on the steck-era knights, and is known to lament the simplification and "non-accurate/realistic" aspects of the newer knights (then again, I might have rubbed that off on him
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