Comment # 11 on bug 1180689 from Fabian Vogt

(In reply to Reinhard Max from comment #10)
> AFAICS these packaged defaults have done more harm than good, as I was
> predicting when they were requested initially. So, I am inclined to call
> these pool packages and packaged defaults a fail, drop them and leave it up
> to the installers to set defaults (or not) depending on the needs of the
> respective product, target platform and target audience.

I'm fairly confident that when implemented properly (using Conflicts or
Requires), they work just fine. Currently the implementation is just
incomplete, so the results reflect that.