Elemental Siphon +20 is somewhat underwhelming, if you manage to use ES every 5min (unlikely) that's about 0.2mp/tick.
.2mp/tic is also comparing to no pants originally.
It's even less for those of us who are already using Oracles, or Marduk.
Making the net gain only 15mp per 5 minutes, 3mp in 1 minute, or .105mp/tic. And by the looks of this update, with lowered perp cost, I see even less need for Mp than we already had. I don't really have MP issues now, lowering perp cost, will only further convince me, I don't need to care about a tiny gain on my Ele Siphon.
The Mag Acc... Someone mentioned HNM's, currently with the ACP body 7MaB/Macc I've found it extremely rare to be resisted, with 0 Macc merits. I have 5 in Patt and Matt each. So I have a hard time justifying that augment.
The only use for Smn I see, is the Ability to Run Fast with no gaiters, but personally, I've never really found it to be a need on Smn, especially if our avatars can't keep up. The only time I've 'needed' movement speed was if I'm tanking something, which I don;t do on Smn, lol.
Summoner's who solo a lot will probably get the most use out of Haste/Double Attack, although I can;t understand why SE gave us 3% haste but only 2% Double Attack, when Haste is always better even on a 1:1 scale. Also take into consideration of what you're going to be solo'ing. There's a possibility that AF1 pants will provide more more Pet Dmg than the pants will Smn Dmg.
But melee'ing in (Turban, goliard, swift belt, nashira, and these pants) 17% haste, on top of (Brutal, Pole Grip and these legs) 9% Double Attack, you're looking at a decent solo build, with Hasso putting you up to 27% haste, and using Hastega for 42% haste, then swapping to Ifrit for 3 Minute Increments for another 12% Double Attack with his Favor. That's 42% Haste, and 21% Double Attack while solo'ing.