A new Custom Field type?
It will have a name, which may or may not be displayed.
It will have optional text and can be aligned left/center/right and pre-pended and or appended with lines, dingbats, or whatever.
Ideally, some HTML could included for typology (H1, H2, Font, color...).
OBTW, I bubble ideas, have for many, many years; not much hope of stopping it now.