The classes were much more balanced previously. Now hunters are too squishy and don't really survive in sweats. That is when the rules were created. Some exotics do not make sense. Double made, double melee, extra perk exotics do not make sense. However, I think that any kind of exotic that only betters movement ability should be allowed. Sweats should be make to move faster rather than slowing them down. Bones, twilight, ophidians all mostly impact movement speed. IMO they should be allowed, so in our clan sweats we allow them.