Bungie wants to ensure there's more variety in what we use, they've said as much. Exotics present a problem here because if they're too exotic, that's all we'll use. Instead they seem to want to try to make some exotics have unique perks that are ideal for particular play styles but not for all play styles. I guess overall I think bungie has the right idea here, I don't miss having a single best loadout for almost all situations.