Its still a big deal...unless you've already got all the gear from Crota. I assume that at some point Bungie will add different kinds of drops to Crota. I mean imagine a year from now...there will be no point in doing it. Although, right now all runs are manageable (if you skip the bounties) for three characters. I would assume that a year from now with all the DLC there will simply be too much stuff to do.