I’ll share a portion of an early prototype design.
It shows the new context-sensitive toolbar (which can be moved anywhere), a new viewport toolbar that is also context-sensitive, the one-file-many-versions browser in the title. New progressive preview min/max range.
I want to suggest incorporating landforms/nature elements in UI. The current pointy curves can be replaced with S curve with a vine/rope like texture or maybe a river network as node connection? Input/Output ports could be indicated by a rock/branch/mountain. Portal can be made as a small leaf shaped node.
Terrible at UI but made some illustrations!