Chill out. There is a reason Bungie delayed the endgame 33 Raid till January. They wanted us all to figure out the raid cheeses so they can patch then before the real raid drops. They will patch all of these methods before hard mode drops, so stop worrying. Crota is not difficult to beat with a good team. Get the timing down and you're good to go. With randoms? Yeah, it's much more difficult than Atheon.