Done this partially. Entry screens use as heading. Tabular strips out. However it's left in for field-map categories and lists because you'd either have a messy layout or lose context. Practically though, someone is unlikely to use a field-setted field for the title field, or leave such fields visible on category/search views.
(Click to enlarge)
(Click to enlarge)
#2441 - Section headings on catalogue entry view screens