I think the answer is clear. AS are known to be dangers to the Imperium because they are all well known for packing the most non-branded bandages and inspiring kitten posters.
As an Eldar I have a soft spot (or rather a hard spot) for Slaanesh, so sound weapons get my vote. (Any excuse to post this...)
Blessed Lord of Change, I offer sacrifices to you for the following - Inferno Bolters Force Staves (And a MoT that doesn't feel worthless)
Blessed lord of plesure I offer you these loyalist worms as sacrifices to make this fellow bretheren wish come true so that we can make other loyalist scum scream and burn to show them the might of the dark gods.
Flamers and Staffs would be the most fair, since Noize weapons are Slaanesh-locked, and Hammers are, well, they're more of an SM thing if anything.
I said in Beta, and I'll say it again now, that we should get at least one unique weapon that can be used with each mark - plague bolters for Nurgle, inferno bolter for Tzeentch, sonic blaster for Slaanesh, and lightning claw for Khorne.
Didn't say i was against it, sir. But, like the guy above, i'd say Lightning claw for Khorne is kinda odd as the first choice? :] First and foremost - Plague grenades, Sonic blaster, Inferno rounds and Khornate axe/greataxe, whatever floats. Though it'd be great if there was more than one each (Plague grenades/rounds/sword for Nurgle, Sonic blaster/Blastmaster/Doom Siren for Slaanesh, Inferno Rounds and a fancy Staff and force sword for Tzeench, and 2-3 different class melee weapons for Khorne)
Don't chaos use those pus Flamers w/e they are called would be nice. Like to see God staffs for sorcerers and some sound cannons and blasters maby more spells non God oriented like I love the ones they got but feels like some or them are weak for spells I mean the poison one for nergle kinda take mins to start effecting some one or is it just me and the devs and sorcerers need more weapons in my opinion.