It is important Adam that Rugby Australia stipulate what those "some aspects" are. This is probably exactly the detail the Brumbies are wanting, and others too if they know what's good for them.
If it's intended that a centralised body will take over the licences/ownership of the franchises, history should be sounding alarm bells loud and clear. Remember what happened to the Force when Rugby Australia took over ownership.
If NSW and Qld rugby retain majority voting on the controlling Board, will it not just diminish the successful teams (read Brumbies) through redirection of players and rolling out inferior coaching and management structures. Like it or not, the Brumbies are the most successful of the franchises and have performed at higher levels than others over recent years. The fear would be that the Brumbies organisation will be taken down to the level of the other sides in a centralised system rather than the opposite which really should be the aim.
While I think the Brumbies are potentially most at risk from a centralised organisation, both the Force and the Rebels should also be wary of such moves. If it transpires that the centralised system is primarily meant to help NSW and Qld to achieve more, then all three of the smaller teams will be detrimentally affected. It would be wise not to sign away any of their rights until the entire picture is known, and even then, what would be there to stop a future action to shrink to greatness and to plunder the better players from the smaller teams?