Giving each job a second spec: would it work?

[Delily]

I love the "Arcanist split spec. didn't work!" argument when almost every Savage Alexander group has a SCH - and SMN is widely considered the best DPS in the game atm.

This demonstrates ignorance of the issue. The reason the designers don't like the split is because anytime the class's skills are modified, it will impact both jobs, which occupy 2 different roles. If they boost the potency of a DoT or of Ruin, suddenly SCH becomes the preferred healer because they are strong healers and now they're doing more damage. In effect, the sch hampers the ability of the team to balance the smn with other damage roles.