I'm Italian, I've tried multiple layouts and keyboards, at the end I've settled on the US one which is better for programming (positioning of the brackets are better) and on MacOS I can just long press to get the accentuated letters.

On Windows I use the US INTL layout and it works really well even for accentuated characters. Just by typing ` followed by the letter that you want accentuated, for example `e = è, even my non coder friends prefer that layout over the official Italian one.

But your keyboard it's actually pretty good in my opinion, you can write in French, Spanish, Italian, German, Greek and probably a few more languages that I can't recognize, so I would propose to change the name to qwerty-weu (West Europe) since that seems the spirit of the project.