Even after having 3 pieces from the previous raid and just the right exotic to fill that fourth slot people will still grind the shit out of the old raid trying to get the fourth piece so they can use their favorite exotic armor piece instead of the only exotic piece they have that fits into that empty slot. This could be beautiful bungi. Make it happen. Re-post your drop rates and gear light level, make things in this game better stronger more sought after, and rarer.