Green dice let frames move through cover, if they also let frames operate unhindered in hostile environments that seems a bit overpowered. Personally, I like the way "space attachments" worked; in some environments, like space, frames only get one
unless they have an attachment to help with that environment. The downside is, "space attachments" don't give any bonus in a non-hostile environment. Using watery terrain as an example,
will let you jump, fly or skim across water in a land-based battle, but if the battle is under
water you need a special attachment to function normally.
I know how the rules work for melee weapons (thanks anyway), but I'm really wondering about the fluff.