All primary's should be able to be any damage type, but make it non reversible. Even exotics (maybe 'cost' more to change to elemental) as who uses bad juju or red death or any primary exotic for pve? What they should also do is buff kinetic energy weapons too. If KE did more damage than any non matched element or to un-shielded mobs then it would be of use Ie KE does 1x damage to mobs without shields 0.75 to elemental shields Matched element does 1.5x or 2x to shielded enemies and non matched was 0.5x damage then at least the variation that bungie wants would still be there? [spoiler]feel free to disagree, just a thought while trying to sleep![/spoiler]