have a use case with a List that contains a fair number of fields, grouped by headings. It would be nice to be able to (optionally) navigate the form using tabs (for each heading) rather than just scrolling vertically.

Maybe using something like:

var Test = new keystone.List('Test', { headingTabs: true });

or something similar.

Source: https://github.com/keystonejs/keystone/issues/578