Comment 3 for bug 17774

As far as I remember, the installer does not offer a nodeadkeys option, but the
console gets no dead keys by default. To be consistent with that, I'd switch to
nodeadkeys by default in X as well; this would also suit the majority of users
better since most German users don't need to type accents. If they do, they can
still switch to dead keys easily.

I think the 4 variants make perfect sense, so everybody can choose the degree of
"deadness" that suits him.