I would leave it. I say this for 2 main reasons.
1) You have a shortened timeline of content drops and there are already whispers of guild members going different directions when there is Elysium vanilla, TBC and Blizz Classic to choose from, so most want to clear this content as quickly as possible.
2) Guilds have been farming this boss for weeks now and it would be an unfair advantage to them to be able to get X pieces of top tier loot much easier than any one else that had a later start. These polls and decisions should ideally come before the content is released to gauge the opinion of the community.
I'm sure guilds that have cleared it want it harder and guilds that haven't want it easier, for obvious reasons. Some hard core guilds also take extra raid time to practice these fights on the PTR, a luxury not every guild has unfortunately.
