[Findecanor]

> Maybe the dedicated context menu key can be removed, [...]

In my opinion, the Menu key would be better repurposed as a Compose key. It is very useful for typing characters that don't have symbols on the keys, e.g: ♥ ⇒ … — × · ÷ Å Æ Ø Ü.

I have used it in Linux and Solaris, which have support for it if you just enable it. For Windows and MacOS, you'd have to use a third-party utility at the moment.