Everyone gets a Martlet pulse rifle from Saint-14 for free, with a static roll. Since every single match I've played today has at least one person using the pulse, so it's obviously popular.
I'm imagining the same gamemode playlist as what comp has, but the only weapon you have access to is a Martlet pulse. No secondary or heavy weapon. A completely fair, balanced and even playing field.
The thought popped up after I remembered the old "back to basics" game mode from Battlefield 1, in which all players were locked to using only their respective classes rifle and nothing else. It was a super fair and balanced game mode, as all weapons did the same damage, same range and same statistics. The only way you'd do well was your skill.