I wouldn't have any idea as to the money required to up the Titans involvement, but to be fair to them, all of the players you mentioned, (Dearden, Walsh and Fifita) all went to PBC or Keebra Park. We now have agreements with both of those schools as well as Marsden. Would it even be worth our while digging in to Brisbane when, with exceptions, the majority go to these schools. I'm no junior scout but from what I hear, they're easily the three biggest league schools in our general vicinity.
This also seems to overlook the fact the second Brisbane team is coming and given I believe one of our biggest mistakes when coming in was having no junior base whatsoever with even Sydney teams having deals with Keebra etc. They might be more than happy to pick up where you left off. It is a big risk if that happens imo especially surrounding junior support. Why wouldn't young kids latch onto the second Brisbane team thats attached to their junior clubs etc. as they'd be exposed to it all the time.
Just some quick thoughts, I'm by no means an expert.