For those of you using OSMAnd - do you think there is any chance that they will offer public transport routing?

I would at once get the 15-year XV plan if they got this, but perhaps it's at odds with their motto “Offline Maps and Navigation”?

(even if I personally could live with schedule-based routing, i.e. not real-time routing, at least for a while).

You can enable the "public transport" profile in OsmAnd, today. It might not support your local area, though.