Impress has objects contains multi-paragraph text. These paragraphs can be numbered or bulleted, including multi-level bulleting and numbering - and this is a common feature in presentations.
Yet - Impress does not have proper list styles for saving combination of list features, applying them elsewhere, and editing them one for all slides in the presentation. At least, the is no UI for such styles.
It standard to reason that such styles should be fully implemented in Impress/Draw.
Rafael, since you filed bug 137297, would you mind confirming? Or - do you think we need more discussion on this?
Regina, can list styles - which are already supported in ODFs - simply be applied to paragraphs in an Impress document? Or does that require a spec change?
I'm asking since you mentioned that an ODP/ODG file may already have character or paragraph styles, even if these are not currently supported by LO.
A list style is not applied to a paragraph but to a list. And yes, ODF allows that a list style of a list in a shape is a common list style. Only LibreOffice has it implemented only as automatic style (aka direct formatting).
So nothing to do in regard to ODF.
So, blocking ODF-import rather than ODF-spec then.