SE can buff Summoner easily if you only take the time to actually think about it. You can up the potency of Fester and your pet. That is all that is really needed. You can implement the Crit trait on your pet to momentarily increase your Crit chance. There are plently of options for a small buff.
@ Oldkrys, I am not an awesome black mage. I do 450-460 DPS with ilvl 120 and 120 weapon opn T10. Also remember that the BLM is limit breaking. On T11 I get around 440 DPS on T12 I get around 440 as well with LB and T13 is really good for BLM, I have around 450-460 unmerged parse. I don't know why you would ask for a SMN PoV, though. I haven't touched SMN since them being screwed over. I won't get nowhere near on my Summoner.