Many of the players who currently play in the Qld Cup would be ineligible for the Toyota Cup purely because of their age - fringe first-graders such as Rod Jensen therefore won't be able to play for the Young Guns but will still need a team to play in.
From what I hear, there has been a bid from Cairns to join the Qld Cup as a feeder club/associate of the Cowboys. I think Mackay may be putting a rival bid in as well, although I haven't heard much from that area for a while. Either way, I'm sure the Cowboys will maintain a presence in the Qld Cup.