If anyone does relocate to Gosford, they must play there permanently and become the "Central Coast [insert name here]". It would certainly work, unlike the Eagles who couldn't commit but thought the people of Gosford would welcome their half hearted effort.
Just like I wish someone would move to Wollongong, not necessarily the Dragons, just anyone.
I doubt there will be any new teams at any stage, relocation will be the final hurdle before the game settles and becomes a true national league.