I've said for a while that the Raiders should explore building a cheap or modular stadium as a stop gap until the government gets around to building the new stadium in the next couple decades.
With the help of a developer and potentially the government and NRL, the Raiders could buy some decent land and build a 16-20k basic stadium as cheaply as possible, no thrills just the bare necessities. They could rent it out to the Brumbies and potential A-league side and continue to use Bruce for bigger matches where necessary. Once the new stadium is finally built they could simply dismantle it and develop the land.
It'd be a solid compromise if they could pull it off, which I admit isn't a given, but they'd never consider it. They are too entitled and lacking in ambition to seriously attempt to solve the issue for themselves.