An added note : i would like everybody to give their first opinion without looking at other's thoughts, too.
Aether
I strongly believe they dislike our lightstall and our two nymphs. I think a dark duo could work here. Needs testin' though
Darkness :
They faced a *lot* of CC last war from us. I think a grabbow with ug & nymphs might be the way to go here.
Death : lightstall. The only thing they have that may stand a chance vs that is their PUgon, which they'd probably bring against light.
Life : i expect them to expect wings from us (it's the main thing that light hates). Fire duo would be my guess, in expectancy of a dim pugon.
Light : last two wars they got a lot of hate from dimshields and pu/fractal from us. I expect something like titansaders (don't laugh :V) or a darkness or fire duo. In which case our best bet would be hurricane, i think.
Gravity : Least ideas about what they'll bring. I think a monoair might be able to beat everything they can think of though.