I've been seeing a lot of posts on Bungie getting rid of elemental primaries and it seems a lot of people are upset. Personally I don't mind not having them, but I'm not against the idea either. So maybe there could be a compromise, an elemental Ammo Infuser. You can pick these up at the Gunsmith with the element of your choice. These replace your current ammo in your primary reserves and what you have left in your magazine, and converts all primary ammo picked up with that element for 10 minutes. These will cost 250 Glimmer and an elemental charge. Elemental charges can be found from dismantling special weapons and heavies, or converting your Motes of Light into these charges at the Vanguard Quartermaster.
Bump and Like, if you agree. Its probably going to get lost in the forums anyways...