Honestly Blizzard fixed ammo for multiplayer games and I can only hope other companies follow suit. Give us unlimited ammo but we still have to reload. This would work well with Destiny, no more worrying about running out of our main damage dealing equipment. Other ammo types would still function as normal, picking up boxes to refill it, but our primaries would never run out. Pvp would stay balanced and pve wouldn't be annoying because we don't have to scramble for the ammo that we shouldn't ever run out of.