I don’t want to seem argumentative or confrontational but I genuinely don’t understand what you are trying to say. I can’t follow your logic.
The issue with the Kemper I find is it scoops everything. Which is fine for NU Metal players but not for classic rock or 80s rock and metal. You need mids for that kind of tone. it makes a huge difference in how your guitar sounds, feels and how your volume control responds.
This says that the Kemper scoops everything which doesn't work for Classic Rock which needs more mids. Then you say this sort of scooped sound DOES work for NU Metal.
However, your next post says,
but it won't do EVH, Thrash or any kind of NU-Metal or Power metal. Those sounds are much more scooped
This suggests to me that the Kemper ISN’T scooped? Now I’m confused.
If you find the sounds are too scooped add some mids with an EQ or the AMP EQ. If you want to change the character of the overdrive more than the overall tone put the amp EQ in the “Pre” setting.
If you want to have a more dramatic effect and get a more old school tone go onto the Amp settings and reduce definition slightly.
I grew up on Santana, Larry Carlton, Robben Ford and like you lots of classic rock so I’m familiar with a full mid sound and I don’t find the Kemper scooped. However, the beauty of the Amp settings is there is massive scope to scult the tone you need with very limited tweaking or menu diving. Remember Definition is your friend.