[oktoberpaard]

You mean that it's cumbersome to have it hidden behind a key combo instead of it being its own physical key, correct? I get that, because it would slow you down tremendously. At the same time, if those letters would be physical keys, it would not be a European keyboard anymore, but a Finnish keyboard. So maybe the conclusion is that this project is nice for some languages, but not for all. In my language this keyboard would work, but letters like ö, ï and é are relatively rare and I'm actually content with the solution that I already have: https://en.wikipedia.org/wiki/Compose_key. So for me it doesn't actually solve anything.