thanks for following up.

The problem I see with this is that it can easily get confusing, i.e. 
if you had the "Menu (hold)" button configured to bring up the menu:

1) Press "Menu (hold)" => menu appears 
2) Press "Menu (hold)" => scrolls to first entry (default) while in 
the menu 
3) Press "Menu" => menu disappears 
4) Press "Menu" => menu doesn't appear

You see the problem there.

Anyhow, I keep thinking about how to make this configurable in a way 
it doesn't get totally confusing for users who just play around with 
the configuration :-)

Best regards, 
Felix