At the risk of getting flamed yet again, and perhaps sounding conspiratorial, I think we are all missing the 'big' picture.
I believe the print media is facing a paradigm shift analagous to when HDTV came out, to when DVDs entered the market, BETA Max vs. VHS, etc. I believe there are just too many ePub formats currently for the industry to go forward. Every company, Apple, Amazon, B&N, all have their own standards making publishing and transitioning from one company to the next cumbersome and costly. To this end, somewhere, semi-secretly, whatever, all these companies have gotten together and decided to work towards a standardized format, a new protocol for print media.
Unfortunately, many of the professional print media features we've come to know and use make little sense in a standardized ePub format. For example, the books I write are academic. While I think they are important, they don't get great sales (as does most most academic style books). I would love to transition to an ePub format for greater exposure, yet I've tried several different programs, none work - they all lose 'features.' Again, for example, footnotes make little sense on an ePub document. Often I include a fact that needs heavy referencing, sometimes far more extensive than the item being referenced - in brief, the footnote may take most of the page. This makes little sense in an ePub document. ePub is literally a web page in disguise - the page is continuous - there is no 'foot of the page.' Hence, footnotes get converted to endnotes, which most readers find cumbersome and don't read. Endnotes are simply less integral to the document. Yes, there would be simple ways of solving this, a half-page arising from the bottom if a footnote is clicked, disappearing once read, yet nobody does this. You can float a balloon over a footnote number, but this is hardly adequate for an academic text. I think you will find many of the lost features of Pages 5 are features that make little sense, or are hard to implement under a new standardized ePub protocol. And it is this standardized format, by virtue of its 'share-ability' that will dictate the future of all professional correspondence.
For whatever reason, I believe the industry in general has decided on a new electronic print media protocol/direction. Apple is merely the first to implement and move in that direction. As this is the new future, all the 'professional' features we've come to know are now considered Sony BETA max. If anyone remembers, BETA max was the superior format, but it became abandoned once an industry standard was declared. You can find examples of this throughout history, good ideas, viable products abandoned because they were perceived to be holding back a decided direction (think Tesla). Whoever, whenever, the new protocol has been set. Apple's feature content in Pages 5 reflects the feature content in other ePub publishing programs that are out there. In order to remain compatible, all of business and professional writing has been deemed obsolete and must now conform to the new standard placed upon us - they have written our future. The future is ePub and we are all being sentenced to that future. Those who do not adapt will be considered neanderthals.
Flame me if you like Robo, the features aren't coming back - only the ones they can fit underneath the new protocol without breaking it. As we found initially, there will be ways of mimicking layouts of the past using the new feature set, but they will be cumbersome, non-intuitive, and limited. They are predicting the end of the printed media, their prophecy will be self-fulfilling - whatever doesn't fit underneath the ePub unified umbrella will be made obsolete... that is unless professionals make a stink and send out a clear warning that we will drop them like a lead balloon. We are being plunged into this brave new world with Apple's hope that they will be leaders in the field. They are not about to let our whinings hold them back.
Flame away........