That space fills up quite quick with the real play testing controls (work in progress pictured here, coming soon) + numerous tabs.
I understand your frustration and we are working towards a plan where toolbars aren’t solely located in the ribbon interface. There will be opportunities to have toolbars outside of the ribbon tabs. Floating and docked. Probably even more conveniently located than the old Quick Access spot. But first we need to get the core UI production ready.