First time ever doing Crota's End took an hour, start to finish, no cheese. It's not hard to do if you have a solid team. I say go ahead and let them cheese. Let them cheese their little hearts out. Then when Bungie patches it, like they did Atheon and the Templar, the teams full of scrubs will be sh!t outta luck because they won't know what the hell they're actually supposed to be doing.