Not really. The free to air stations could not care less whether a side brings in "new eyes" or just gets the same old people to watch another game. They are selling advertising space, so the only thing that matters is how many people watch the game. Whether those same people have already watched another game that weekend doesn't matter.
Of course getting new people to watch might mean that the overall ratings will be higher but not necessarily, and especially not in the short term.
Ask yourself this question: which game would get more people to switch on their TV and watch - one featuring a new team from Perth or one featuring a new team from Brisbane. Quite clearly the Brisbane team is it. The fact that that same audience might also watch the Broncos play the next day is not relevant (for free to air revenue).
Pay TV revenue is another story and this is where a Perth side might have an edge. As Pay TV operators derive revenues from subscriptions, the amount of new eyes/subscriptions is relevant and could increase value. Although advertising still plays a part.
In respect of generating new TV revenues the Central Coast are sadly not even in the hunt. As much as people want it to not be the case, Central Coast is part of the greater Sydney region, even the ABS classifies it as such. Many people from there work in Sydney CBD and come from other parts of Sydney originally. And the Sydney TV market is already dominated by the big-rating clubs like Saints, Parra etc. It's hard to see where the Central Coast would have an effect. Not that the Central Coast Bears bid does not have merits, but additional TV revenue is not one of them, unfortunately.