It would be useful to be able to extract information from RPM spec files when auto-creating recipes in recipetool. When implementing this it might be necessary to add a command-line option that lets you specify the spec file to look at in case it is not within the source tree for the application. It may be possible to re-use parts of the Tizen spec2yocto tool: https://review.tizen.org/git/?p=scm/bb/tizen.git;a=tree;f=tools
We do now extract name, version, license, summary, and homepage from any spec file we happen to find in an archive, however there other things that we could extract - these would be particularly useful for handling SRPMs (.src.rpm).
What we have now is sufficient, as Paul explained. Send a patch if you need more.