The goal of the new Fedora "Simple Patch" policy reads, "This policy is designed to help prevent situations where simple patches are posted to bugzilla, but end up rotting there because the maintainer is unresponsive. The goal is to accelerate and facilitate to application of small but important patches to the distribution. For situations where the package is out of date or severely broken, the non-responsive maintainer policy should be followed. This policy is designed in particular to avoid situations where casual users and packagers who encounter a bug and decide to help out by submitting a fix, end up seeing their patch rotting away. For people who often submit small fixes to packages across the distribution, applying for proven packager status is the better approach."
Among the items considered "simple patches" are incorrect compilation flags, small fixes for critical issues, distribution integration issues, and other items.
More details on the new Fedora Simple Patch Policy can be found via the mailing list announcement and the related Fedora Wiki page.