With the product significantly changing it's look and feel, the documentation space should follow suit. Some ideas: more white, less green; use the Roboto font to match the product, perhaps for titles; (more effort) use scroll viewport to remove confluence menus for a cleaner looking doc space.

Aim would be to create a clear change in style compared to older doc spaces. 

Given the longer term plan to change tool for the doc, perhaps this could be achieved by just making some confluence css changes.