Menu items should not be capitalized
The first word of each menu item is capitalized, but it looks better if it's not.
I would suggest using the Microsoft Windows User Interface Text formatting guidelines.
In short it says:
Use title-style capitalization for titles, sentence-style capitalization for all other UI elements. Exception: For legacy applications, you may use title-style capitalization for command buttons, menus, and column headings if necessary to avoid mixing capitalization styles. However a more thorough read is necessary to take it all in.
Not sure I understand what that means, it feels contradictory. Microsoft Windows User Interface Text would suggest naming a menu item using "title-style" eg. "Open console" instead of "Open Console" but NOT "open console". But you are saying we should remove all capital letters (ie. use "open console").
I agree with Microsoft Windows User Interface Text recommendation, not yours.
We should use "Open console", not "Open Console" (we use the latter right now)
Ok that's good then. It's cause you said originally "The first word of each menu item is capitalized, but it looks better if it's not." which seemed to mean everything should be lowercase.
In order to avoid screwing up our translation files, I suggest keeping all the tr() calls and instead editing the mapmap_en.ts .
Maybe it's ok to keep them capitalized. Titles are usually capitalized in English.