Since PVP balancing has in almost every respect made pve concealment operatives and bodyguard mercenaries either quit or reroll to other overpopulated classes your argument is misguided at best.
Off topic, but if you have people doing that, they need their heads examined. We have one Scoundrel putting up healthy numbers, compared to a Watchman Sentinel & Hybrid Balance Sage, every week. Also, our two best healers (and the ones we full cleared EC HM with in the first 24 hours of patch 1.2's release) are Commandos.
Reports of their death are greatly exaggerated.