Thing what I often would like to hear more, is diversity. Especially among the current "ultra brutal" PE type of bands, there is one thing what is becoming flaw: Identical vocal style from track to track, from album to album. Often for example "shout as loud as you can" or such.
Of course we can say this has been present in many of the artists, long ago. But it feels as if there is now more than ever.
Different pace. Different pitch. Different usage of force, tone... and perhaps even creative use of effects? While I naturally appreciate sheer blunt brutality, it ain't always enough. It starts to become weakness, when flow of each sentence or scream is almost identical.
Some artists can make it work. I appreciated greatly for example Deathpile "G.R.". Guttural shouting without much processing works very well. But if there would be 3 more albums of that, maybe opinion would change? Often vocals what sounded odd or outrageous have turned out to survive time quite well. Ability to sometimes border on odd or ridiculous doesn't do damage. It's often the little spice what keeps it interesting.