Package and version fields would make it really easy to check bugs before installing package. There should be also switch in emerge that shows number of bugs per package. Package and version fields would also enable automatic evalution of packages. For example it would be possible to write script to make "package.mask" based on bugs and time past after package release. Reproducible: Always Steps to Reproduce:
this is better suited for the gentoo-stats and gentoo-stable project that are currently being worked on. Integrating this into bugzilla would require too much custom code, making future upgrades to the product very difficult.