It's not PVP so it does not affect your game just the people that do it in that group. It it affected PVP bungie would maybe ban for it. (IE, Unlimited Heavy Ammo glitch) I can say I have beat Crota the first week Legit and it was sick as hell to down him. Felt great to do it after 6-7 hours of non stop wipes. I only cheese him now because I can't get a group that wants to do him normal atm. I'm sure HM:CE will be just a cheese fest much like Normal mode is now. The only part you have to do is the wizard phase.