I think it's fine.

This is not a baby dungeon with handholding to the end, it is called a raid, so the difficulty should be higher than faceroll.
Jagged Edge: The problem with this is mostly the mindset of "It's just a marked AoE, marked AoEs are harmless" like in most other dungeons. If people learn just to dodge this shit they wouldn't be surprised by a hard hitting or instant death AoE.
Controll Tower: It is easy to spot where the towers are gonna land. People have to learn to look out for mechanics and not just go tunnel vision.
Extreme Edge: Also easy mechanic. Hashmal can only come from 2 directions and it is very easy to spot which side will burn.

Again if people wouldn't always expect faceroll content and just put in a little work they would be so much more successful with the 24 man raids.