Thanks for the link. I would expect that system would work better as a whole. The member over at dippy already has frame connectors in and the debate is whether or not he should think about the core support brace.
Andrew has it right, though. The twist is going to occur throughout. By limiting the twist at the very end (rad support) in conjunction with the frame connectors, and the crossbraces, you're going to be able to plant the front end in cornering and put the power to the drive wheel where it needs to be.
Of course, then you have to be able to take a look at suspension then put everything into play, but just like in everything else, it's a system, not just a component. The chassis gives you the platform to build the suspension, just as the block gives you the platform to build an engine.