This is not an advocacy platform, and you might want to take a look at https://bugzilla.mozilla.org/page.cgi?id=etiquette.html Feel free to use https://connect.mozilla.org to suggest new features.
Bug 1961084 Comment 1 Edit History
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This is not an advocacy platform, and you might want to take a look at https://bugzilla.mozilla.org/page.cgi?id=etiquette.html Feel free to use https://connect.mozilla.org to suggest new features. Shortcurs are not customizable at the moment, and the choice of that shortcut for Reader Mode has literally nothing to do with what OS developers use.