Hi,
this is more a remark than a question.
I have noticed that the "US-international with Alt-Gr dead keys" keyboard layout is not available in MCC>keyboard (only the standard US-international is there)
The difference between "US-international" and "US-international with Alt-Gr dead keys" is that the latter behaves exactly like the standard US keyboard unless you press Alt-Gr + some keys to type special characters, while the standard US-international uses accent keys (", `, ', ^ ...) as modifiers.
I was able to set imy keyboard to "US-international with Alt-Gr dead keys" through the KDE preferences panel, but I think it would be useful to have it also in the MCC ... the standard US-international is a pain for coding (can't easily make an apostrophe), and is not that handy for typing anyways ...
best,