Am I the only one who has a mostly clear IDE? Stock Jetbrains IDEs are way too cluttered.

You can replace the entire menu bar and a few other things with learning the shortcut to search Actions and the omni search shortcut for code & more. So long as those are retained in the new UI, I don't see the issue here.

Tangent: This to me is the same as the obsession with multiple monitors. You don't need it. Virtual desktops/workspaces do the same job in less physical space and let you actually organise your software.