@D3stinyRunner It depends on what you mean by glitching. Typically, any game breaking glitches, like emote clipping, aren't allowed because they get patched somewhat 'quickly.' If Bungie makes an announcement about a glitch, or it's too broken to stay in the game, runs submitted featuring these glitches are not accepted.
However, if you use glitches in the game that have either been there since day 1 or have no reason to be patched, then they are generally allowed. Anything new is handled by a case by case basis.
That's basically it though.
Not speaking on behalf of everyone, but it is very unlikely this will get added. It could be ran outside of the site, sure, and there would probably be a better case for the category if the entire raid could be completed with only 4 people.
As of right now, there are no plans to add any categories in the near future.
I'm sorry.