Here are my thoughts for SMN:

I think our damage should be increased by a respectable amount(outside abyssea especially). We are, or at least were, supposed to be comparable to a blm in the old days. That time has long been since over.

All of our BPs should be on separate timers. Their Issue was having 12 JA timers maximum only counting the Main Job's timers. We have 8-9 BPs for each of our pets(and I'm fairly certain that the pet commands to not count towards the cap otherwise DRG would be at 13-14) and we have 2 JAs personally as smn(not including the 2hour) so I don't see a problem. The spamming of our BPs wouldn't be that over-powered(especially compared to a BLU spamming spells or a BLM) and we really only have 2 good and 1 decent offensive BP for each pet. Plus we'd only be able to use our abilities for as long as we have MP(much like a blm or blu and it's spells).
-However, if there still is a problem with the Job Ability Timer limit, make it like strategems. We have 5~7(though I think 5 is enough) Points that we can use either in rapid succession that recharge at the normal rate of our BP timers(and are still subject to bp delay - gear to help recharge them faster) or reserve them for when we really need them.

More Job Traits for our pets please. Our pets are, and have been, higher level than the Primes. We should have all their JTs for our pets, honestly. Natural Double Attack/Triple Attack, natural elemental en-spell of their element(diabolos can be endark, fenrir could be enspell, carby could have an epic endia3?), And more traits that make each pet more unique, like Shiva have more MAB than the others(I would relinquish more MAB to Ramuh as well, seeing as he is a MAGE, but Shiva definitely needs it) and magic Crit rate(and maybe higher change for Blood Boon), Garuda Evasion Bonuses and maybe Triple Attack, Ifrit Attack Bonus and a LOT of Double Attack, Leviathan Magic Evasion and Triple attack(also make all his Physical damage be Piercing), Ramuh Crit Rate+ and Crit Attack Bonus(and maybe some MAB as well), Titan should have every defense trait(not including evasions) possible; for the sidle ones, have his arms behave like shields or something too that effect, they're huge enough! Carbuncle should have super Auto-Regen(like 15 I think) and natural Cure Potency +, Diabolos definitely needs Magic Accuracy and anything else to help land his enfeebles(I'm looking at you Pavor....), and I'm unsure as to what unique traits Fenrir should have, but he definitely needs to be a monster of a pet(look at how much you have to do to attain him! and his Lore!)
-Auto-Spikes: Some could be unique that instead of doing damage they inflict an enfeeblement like: Diabolos would be Absorb Spikes which would be "Hit me and get a stat drained!", Fenrir could get Dispel Spikes, Leviathan could get Slow Spikes, Titan could get Break Spikes(though very silly due to Break's nature), Garuda could get a spike effect that slightly pushes back whatever hits her(enough to disrupt a spell if they cast right after an attack but not enough to get them out of reach, unless they already were at max range), Carby could get Flash Spikes(can't really think of anything better). Of course all these special spikes would be subject to resists and they could, if needed, also be a %proc(20~50%?) if needed too.

About new pets:
Yes, new pets add new excitement for SMN... For a short time until we realize that the Nymph is still the best. We need Fixing of our old pets firstly before any new pets are added(and let's face it, Cait Sith is going to be as useful as a carbuncle that can't cure; and Atomos won't be much more desirable).