What it really boils down to is SE deliberately locked out the level 40 abilities of /WHM, /NIN and limited accession of /SCH while allowing anyone to get everything from /RDM at full power. Come 99, nearly everything from RDM will be accessible to every other job as /RDM. SE has done an incredibly poor job of adding anything to RDM since 2005. The best we've got is Dia III, then Refresh II, otherwise everyone else either gets better or the same.