As someone raised in the whole-half-quarter notational system, it rather gives me a headache to have to type a 5 for an eighth note. Just as we have different keyboard layouts for different Roman alphabet languages, couldn’t Dorico offer non-British users an alternately configured interpretation of the numeric pad so that typing 1 gives you a whole note, 2 a half, 4 a quarter, 8 an eighth, 16 a sixteenth, and so forth? And continuing on logically from that 12 would give a triplet eighth.
You can already re-assign the key commands for single-note durations as you wish. Except for triplets. I don’t think the half-double concept is uniquely British. Now the odd names for durations, on the other hand… 
And how would you type a 16, exactly? How would it know you wanted a 1 and 6 combined, rather than a 1, and then a separate 6?
I’d suggest users can really adapt to whatever they regularly use. Give Dorico’s mappings a chance.
I use the middle 5 for a quarter note, as some kind of central point, and take it from there. Makes a little more sense to me. Oh, and I use the numpad…
Cheers, Benji
I remember one notation program (I’ve forgotten its name) that used 1, 2, 4, 8, and then 6 for 16th-notes and 3 for 32nd-notes. It didn’t support 64th-notes at all.
As for “odd” note names, “croche” in French means “quaver” not “crotchet” 
Me too. Actually, I’ve thought about making the note values decrease from left to right on the keypad, so 4 is a quarter note, 5 and 8th, and 6 a 16th. That would make 4 and 6 fairly memorable. But I haven’t “field-tested” that idea yet.