Excluding Players from Ultimate Savage is Not the Right Move

[Cenerae]

The entire point behind Ultimate Savage is that it's there to challenge people who've already beaten the regular Savage raids and want something else to do.

That strongly implies that if you're still progressing on the regular Savage content, you have absolutely no business being there. Let the top couple percent have their super duper ultra mega hard raid, it's not doing everyone else any harm. If you can't beat O4s now then you can always beat it later into the expansion cycle and go experience the superhard fight then.