Kinda depends on your ori situation and your fire situation. You might get some mileage out of having assault L defender M if you're a f2p fire main considering the game cucks you heavily on fire event weapons. As for other elements... they're filler or just complete garbage (what the fuck is that water one). Wind looks particularly tasty but I'd hesitate on that one.
It's datamined. Wait a few days for the girls to actually come out.