Sorry for the late reply, But even if Enspell damage was effected by MAB, stacking MAB would not make up for lose of general DPS from an Atma combo like, RR/GH/Apoc. Not only would a heavy MAB make you lose nearly 70% Critical hit Rate, 30% Critical hit Damage, and 15% Triple Attack, It would only effect your enspells slightly.
Even if say, Your enspells did 50 dmg a hit. +30MAB would add i think just 15 more Damage, +30IceMAB would add about the same. +50MAB would add like 25 damage to that (Ultimate). So if anything, with 50dmg Enspells, and Full Magic Atmas, Your enspell damage would be hitting about 105 dmg.
Right now no enspells for RDM hit 50 (I think maybe Teir IIs but they just suck to the point of not worth using). an additional 105 a hit would not make up for the lose of Critical hit Rate, Damage, and Triple Attack.
Basically, what i was trying to say in that post is, If you're going to try and melee on RDM, Dont half ass it. You can't expect to full up on Mage atmas and not get people going "you're doing gimp dmg wtf are you doing". You need to actually be a Melee RDM if you're going to try and Be. RR/GH/Apoc and pump the Eviscerations/Chants/Vorps.
While, MAB Effecting Enspells would give them a boost, It would simply not make up for the lose of using real DD Atmas. Unfortunately if you wanted to be Magey after Meleeing you'd want to consider switching Atmas :P do both to their fullest.
(I wont speak for Outside Abyssea)
Edit: And as far as "Gearing" for MAB if enspells got that boost, I dont think that would be wise. You'd lose out on a lot of Melee Stats. Even just using Earrings for MAB, You lose out on Suppa and Brutal, If you just use Cape for MAB you lose out on Atheling, Belt is obvious, and Main slots offer too much haste to be worth replacing.
One of my suggestions a few pages back was giving a JA that while active, amongst other things, gives Enspells effected by MAB, But it was more a bonus that can take advantage of RDms natural job Traits.
Edit2: Again on the Topic of Elemental WSs. Outside Abyssea this will likely be a better choice if it was strong enough, Inside We'd be better off with Chant, Vorp, or Evisc. Unless it was insanely powerful to the point it was wildfire level. but we can't expect that.
Also, when it comes to haste, SE is picky in giving it to people in form of JA haste, I can't expect a job Trait that gives us basically capped Gear haste instantly. Its asking a little too much :X
It would be nice but slightly unrealistic![]()