Hello,
as this flame free maybe it is good place to put my premium economy idea.
Emirates also is going to introduce premium economy, but why not to make t this way:
angled lie flat beds, but narrow and low (important): layout 2-4-2 (this will allow "access" to aisle by crossing over laying other pax)
Service would be the same as in economy (which is very good in Emirates).
Tickets would be more expensive then with "standard" seats, but still cheaper then business class.

Why no-one do it this way? It is not possible due to some reasons?

For now, I'm actually not a fan of premium economy in Emirates. Well, current version when you just have option to pay for better seat on selected airplanes is ok, but I'm afraid that when "standard premium class" tickets will be introduced they will have to reduce quality of service in standard economy : / :P