No, there is no way, beside the options you can check like Z, tags, motion vectors and so on. This create additional files that some compositing packages can use.
About the RLA/RPF thing, I asked the same question to Softimage and they said there is no way you're gonna see this soon. This is something that has to be implemented by mental images and it seems they don't wish to do so. Duh.
Cheers
Bernard