All the bosses were good and manageable with the exception of Cthun.
The changes made, cthun aside, I believe will allow most guilds to clear the content. But lets talk about Cthun
The giant eye and tentacles spawning during cthuns vulnerable stage needs to be fixed. It was never like that in classic
This one change alone would make a huge difference.
And for normal mode, let the giant eyes be stunnable and interruptible like how it was back in classic