Games Day stirs more talk of Chaos Legions!!!

According to BoLS' sources at Games Day Chicago, there is talk of the Chaos Legions book and models in the works. Now. I hate speculation, but I do love to speculate, so I am trying to wrap my head around how a Legions book would work. Would it just deal with the specific legions of undivided CSM or all the traitor Legions including the dedicated ones .... OR .... would it be a replacement for Codex CSM in which we would see the Hero Hammer 40k-type module of Codex Space Marines come to the fore (ie Alpha Legion Special Character allows all CSM to outflank ect.).
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While that gives us something to chew on thought wise, I would like to explore what would be nice to see for the "Forgotten Legions" of the CSM.
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First, the Alpha Legion; I would like to see them receive not only an army-wide improvement allowing them an outflanking or infiltrating ability for non-tanks, but I would also like to see them bring in a unit similar to scouts, these could be their cultist-type infiltrators. A more devious way of doing that would have to involve the assasin hidden in the enemy unit trick from Fantasy, but I don't think that would go over well with the masses.
Finally, since there has always been a question of Alpha Legion's allegiance, I think they should be restricted from having Demons.
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Next, the Iron Warriors, a big favorite in the previous codex due to the heavy firepower they bring to the table. A return of the basilisk would be cool and so would Lords that can equip servo harnesses and maybe troop choices that can rock either two heavy or two special weapons.
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The Nightlords were never really popular, but I think they could be awesome in a re-vamp with jetpack equiped CSM as troop choices and options for entire bike armies.
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Finally, the Word Bearers. The easiest ideas for them would be the ability to summon deamons per the Daemons codex, have fanatical cultists and of course have a Dark Apostle (evil Chaplain) HQ choice.
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Anyway, that is all the speculation and thoughtfulness I have in me for now. I am heading out to possibly play my first game of Planetstrike tonight. Wish me luck and as always feel free to comment with your own ideas for the LEGIONS!