Mu; I don't want to hide that information. The cultural traditions (calling them "established rules" is a stretch when there's so little agreement about what they are) surrounding authorship hides them in a lossy format while causing at least thousands of scientist-hours of drama a year. If authors want to explicitly flag down who did what, they can do it somewhere in the article proper.

A possible counter-argument would be that employers want to see, e.g., how many papers a given research has been the PI on, without reading the article proper. The current system already doesn't work for that use case; the status fighting over first authorship has created the ridiculous notion of "co-first-authorship" and false declarations that "Dr. X and Dr. Y contributed equally to this project."