Hi, the 5 year RRV does require an extended length of stay but the 3mth one just requires you to have spent 1 day in australia. I think you still have to prove you have genuine reasons for needing to return to australia, job, schools etc.
No we've not heard anything about it being an issue that our visaa have expired. I guess its not an expiry really I guess. Just takes away the right to to and fro.
Oh and we've been warned by our case officer that the wait for the visa grant is at least 9mths. We lodged on 4th june, got allocated a case officer about 4wks later and have been told to get meds done from september onwards. I guess its then a waiting game.
Jo