Configurable Left Pane

We have inherited sharing turned on so all 100+ users can see everything.  We're only using Private Spaces.  The directory structure on the left pane is tremendously cluttered--even after we reduced our main company directory structure to six folders, one of which is the Wrike Playbook.  We recently got feedback that Wrike looks like someone's "messy desk."  This undercuts adoption, IMHO.  As the Owner/Admin, I'd really like to be able to configure the left pane so I could put our directory structure on top and move the Spaces to the bottom with Blue Prints. Wrike on!