Most has already been said by Vampyre.
All I can say is, yes these positions must eventually be filled, but its in the best interest of us all if the top Admiralty doesn’t act hastily (which they haven’t done so far).
If your active, capable, and willing, I’m sure you’ll have a good chance of making it into the Admiralty.
As for when this will happen, I don’t know. Its up to the top Admirals.