I think SE believe that giving Cure V to SCH and RDM would 'unbalance the game' and are attempting anything and everything to work around this in a different way.

Personally I believe it wouldn't and given the choice everyone I know would still pick WHM over the other two jobs when required in a healing capacity on tougher mobs. WHM will still remain the superior healer.

All I really want is something to remove Amnesia but that's a whole other subject....