Remove all the icons in the menu altogether.
Why should some menu items gain the “privilege” of an icon, while others don’t?
Because if they all had icons, then it’d be far too busy and confusing? Well, isn’t that implicitly telling you something about why cramming redundant visual information in there unnecessarily might be a bad idea?
And, yes, “redundant”. It’s redundant because right next to the icon is the word “Save”. That word exactly and unambiguously tells you what it does.
Having only some items have icons and others not is visually asymmetric and unbalanced. Having all the items have icons would be far too cluttered and visually confusing.
Having no icons is clean and professional. Icons are redundant anyway, as the actual text is right next to it in a menu anyway - just read the text to discover its meaning.
No, I don’t consider the “here’s the menu in a foreign language, can you work out, from the icon alone, which one is save?” to be a valid test.
Because if you can’t speak Japanese then why have you set the language to Japanese? This is not a situation that occurs or will occur.
And, quite frankly, if we’re accounting for this wholly artificial hypothetical, why stop at the icons in the menu. How are you going to be able to do anything with this Japanese version of Blender that you can read a word of? What about those other menu items that don’t have icons, eh? How this is hypothetical can’t-read-Japanese-but-insists-on-running-Blender-in-Japanese user going to cope with all the other bits of the UI that don’t have icons? Do they also like to run Microsoft Word in Russian too, just to spice things up?
This, in my opinion, is not a valid test.
Menus require no icons. They already have text which is clear and unambiguous. And I advise our hypothetical user to change the language settings so it’s not a language that they can’t comprehend - and that they really should stop being quite so silly.
(p.s. I am only referring to icons in menus. Icons in toolbars - where there usually is no accompanying text - is a different matter. But the application menus and context menus just don’t need it.
p.p.s. Someone earlier posted what most of the competing products use and - oh, look - none of them use icons in the menu at all. Hint, hint.)