Does it strike anyone else as odd that we, being the premier DoT class of FF14, have ZERO interaction with our DoTs? I mean, we have one extension ability (contagion), and one nuke "based" on DoTs (fester...but thats really a stretch...all it requires is the existence of DoTs, not actually interacting with them).
You're also forgetting Bane, which adds a LOT of free damage to mob groups if you use it after Contagion.

Keep in mind that when we get more levels, we're also likely getting more job specific abilities, which will develop the job's theme further.

Frankly i like the high sustain SMN offers. I have a feeling it's going to do well in PvP with it's core ability set, though we'll have to see how the new PvP actions affect things.