APS-H with APS-C crop mode will add enough for others to consider. Nikon has been using crop modes for years, whats up with Canon?
APS-H is dead for these reasons, it was just a hack that still doesn't use the full ef glass but looses the advantages of aps-c:
* With the current design, you cannot use ef-s lenses with aps-h or ff because of the larger mirror - and Canon is unlikely abandon a lot 7d and other aps-c users who invested in Canon ef-s (60mm macro, 10-22 & 17-55 zooms) or 3rd party ef-s lenses (like the tokina uwa).
* Canon likes well-off people or pros who want better iq than aps-c to buy ff cameras with very expensive tele primes and/or teleconverters to gain reach
* For most beginners/amateurs crop cameras have advantages: larger dof, longer reach, more fps. And in 5-10 years the aps-c iso performance will be so good to satisfy most people, so why rock the boat now?