The current draft selection is ugly. It redundantly repeats the page name, displays the time in a user-unfriendly format, exposes more information than necessary immediately, does not use AJAX to replace the text-area content, uses a different user experience for preview mode, and does not indicate save status dynamically when a save action is performed (manually or automatically). Some of these issues are tracked separately, but the entire draft manager needs a rework and there does not appear to be a bug for that.
Showing save status of the most recent draft right next to the "Save" button, having a selector for additional older drafts, using readable time information ("3 minutes ago") and using AJAX for all interactions with the draft selector seems preferable.
IMO this is blocker-level before enabling the extension on any Wikimedia wikis.