Reducing the complaints to "Some Power Users" is just ridiculous. People across all skill levels are complaining, and this, because so many important features have been removed.
Remember, the suite is called i_Work_ which clearly implies that it's a software to _work_ with, and not just to write predefined fun cards for birthday parties.
What happened for example with Pages? There's an app called TextEdit, which was perfect for those "Non-Power-Users" that just wanted to type some basic texts. Now Pages is more on par with this, instead getting more on par with Word.
Removing mail merge, address fields, images in header/footer and tables, word-by-word languages, the format bar, guidelines, vertical ruler, backwards compatibility and many more from Pages is a disaster not only for "power users", but for all of those who used Pages to create documents at work.
I'm speaking about teachers, architects, students, lawyers, freelancer, engineers, artisans, and so on. I know quiet a few of them that bought a mac just because of iWork as a great and enjoyable alternative to Microsoft Office. Most of them won't complain in forums as they are not "Power-Users" knowing where to complain, or have no time to do it. They just give up and buy MS Office.
The header of this article should thus be renamed in "Average Users can't use iWork anymore for their daily tasks".