What's the point of the 4/8 person party buffs?

[Zenaku]

It's for

4 Party Dungeons = casual, Less planing, Easy to set up, Tank,Heal,Dps,Dps.

8 party Dungeons = Hardcore, Planing, Hard boss, Team work, Setting up timing for spell, maybe need two tanks a healer.

I said this like 5+times now they adding that to help casual and hardcore do the dungeons and raids later.