I think some people are asking for same content, lesser difficulty, less reward. This will allow people with smaller static playing groups to see the same content Yoshi-P and his team has been working tirelessly to provide but also prevent the "cheapening" of the fight for those who actually do it as a full blown 8-man group.
It's only beneficial to the longevity of the game to give more people with different playstyles and party preferences more things to do.