Lack of End Game Content

[Zabuza]

They would blow through the 10 additional bosses and then come and ask for more. The reason being is that each boss in this game is very formulaic. Once you figure out the rotation and how the mechanics work all that is left is to just get the ilvl to beat it down which would not take very long. Even for average raiders or just story raiders. Much less for hardcore raiders who would funnel what gear they can to the best players on the static team.

There is no satisfying the rate at which people can consume the content.

Four savage fights last a lot of people for a couple months. So you are saying if that was doubled it wouldn't last double the time? Also, people aren't necessarily asking for ten same-style boss fights. Instead, perhaps another form of challenging battle content? You know, like how FFXIV had like eight forms of them? Maybe just not another Savage or Ultimate trial fight...But hey, even that would be nice.