Thanks for the feedback, Joshua. That's been asked for before so I'll add your vote to the feature request so it'll gain more visibility during our next product planning cycle.
In case you didn't know, you can also create requirement references by dragging and dropping requirements onto use cases and / or requirements. Please note - when dropping a requirement onto another requirement, press and hold hold the shift key before dragging so that the drop creates a reference instead of making the dropped requirement a child requirement.