Some new official info from ubi forums

[Stiboo]

Yes Kendo I agree

that sounds like a good idea to put weathering to zero. This would work best for user created missions and campaigns as the official missions/campaigns will already have the weathering levels set for all a.i. planes...but it wouldn't be too big a job to re-set all the official mission weathering to zero if the player wanted to use custom skins.

This will also help with unit emblems and nose art - in the screenshots i've seen so far these do not have any weathering/rivets/panel lines and look false against the otherwise great skins, with the greater detail/quality custome skins in COD we'll have better quality emblems/nose art as well for custom skins.

Templates for panels/rivets is another story !....we'll have to wait and see.