Add custom field support to pages and posts (or preferably all content types). The ability to segment arbitrary content on a page into separate admin fields is critical to creating professional, usable administrative systems. Having these features extended from just People and Donation forms to all content types will give developers tremendous flexibility to create great experiences for editors and content providers who are using the NB dashboard, and eliminate the need for many different hacks which developers need to use currently to accomplish similar things.
We’re planning to use liquid in theming to make it possible to provide extra content areas to control panel users - which we will tie together with a larger WYSIWYG editor update. When we have a timeline we will let you know!