Here's what I am finding on v 1.5.
BACKEND RESULTSGlobal Parameters - HIDE Author.

Menu Item for Article Category Blog for FAQ Category - SHOW Author Name

FAQ Articles (both the same) - HIDE Author Name
FRONTEND RESULTSMenu - Author name is INCORRECTLY HIDDEN (In disagreement with menu item parameters)

Article - Author name is HIDDEN (As per article parameters)

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I do not believe v 1.5 is working properly. I also realize it's not right to say there are three levels of overrides. It has not historically worked that way.
Here's what I think should happen (and what I believe has always happened before):
When the Blog Category Page is produced (or any menu item "summary" page), the menu item parameters should be checked. If "Use Global" is specified, that is the value that should be used to produce the page. Otherwise, the menu item parameter is used. NEVER should the article parameters be referenced to produce a blog or section layout.
When the Article Page is produced, it's the same thing. If "Use Global" is specified", that is the value used to produce the page. Otherwise, the article parameter is used. NEVER should the menu item parameter come into play.
I could be - and have been - more frequently than I care to admit - wrong. But, this is different than previous versions and I am not certain it is logical. For certain, I am unable to get a consistent blog page this way with all information showing, as per the menu item choices. When I set an article parameter - I am not thinking of any menu item I might later produce.
I'll have to think more on this but it's not setting well with me. What do you others think?
Amy