I would love to see the ability to add a column (section) that is a full column, but just appears narrower – eg, 66%. Some of this functionality is available with an add-on (GitHub - wassy92x/lovelace-ha-dashboard: A custom dashboard for Home Assistant with sidebar, for instance) but isn’t compatible with the new sections view.
I love having a common section on all my pages for quick actions and navigation that just takes less prominence on my displays that the main sections:
