That would be a weird categorization. ;-) Over the years, both "System" and "Miscellaneous" have become a kind of "catch-all" for stuff that doesn't clearly belong anywhere else. The distinction between them is somewhat arbitrary. I agree that this could use some cleaning up, but if we start inconvceniencing our users with that, there should be a clear strategy behind it, not another arbitrary distinction. Moving to yast-community; maybe somebody has a good idea.