My opinion is that if you choose to run Maulers, make them four-off. You want to drop them early, or they're mox-fodder etc.
I also prefer Sulfurs still. Will probably give Maulers a swing in the next tournament, if it's not important, but I'm still not recommending them.
Also; Red Akroma sucks balls more often than not - this deck is inconsistent as fuck and you should not try to make it more so.
If you have a metagame consisting of mostly UW-landstill and everyone maindecking seven FoW's, you can consider her. I have such a metagame, and I do not play her anymore. Sulfur beats face well enough.
Gathan Raiders is a 4-off.
And so should be RPD, though you can make do with, say 3 RPD and 2 Sloggers, but you should have reaaally good reason to force your curve lower if you choose to do so. (I can't think of any reasons that would justify doing so, but I've seen such lists do well so I mention.)
And I would recommend running 23-24 threats. It makes the deck run smoother. The less creatures you run, the more often you have to imprint something relevant to drop 1st turn moon f.e. and then you're left with no pressure.
So I would recommend: -2 Akroma, +1 RPD, +1 Raiders. And if you have more controllish metagame, you can consider -1 Jitte +1 Sulfur. But then you should find room for the third jitte in your sb.
(that would, btw, end in the exact list I'm running..)

