Ok just to make everything clear. ill post things here when i feel nessicary for everyone to know it.
-Full shades arent very intelligent. The shade is like every other parasite on the planet. If it extincts its host then thats it. so it wants to use the humans, not destroy them, also they dont go creating ambushes all the time, if they do its more like a" lion looking for food" plan then it would be a "special ops teams" plan.
-Full shades of the same type do get along and can talk to one another but like lots of creature that are alike but of different species, they dont like each other.
the real issue here is when the shades attack the humans out of the need to get more, shadelings there bodies.
check often for updates.