I have to disagree -- in part -- about the advice system: used sparingly, I think it's one of the killer features that lets me tweak emacs exactly how I want it

I have to disagree -- in part -- about the advice system: used sparingly, I think it's one of the killer features that lets me tweak emacs exactly how I want it. That said, yes, I think packages should be (at least) discouraged from using it. A highly dynamic and patch-able software system is a huge asset IF you're the only person working on it, which is true for my own emacs config. But having third parties simultaneously monkeying with the same component without knowing about each other is certainly a recipe for instability, even indeterminism.