I agree that removing implicit fallthrough is good, since it's a 90%/10% feature, but my problem is that the "break;" is meaningless extra syntax, since the lac

I agree that removing implicit fallthrough is good, since it's a 90%/10% feature, but my problem is that the "break;" is meaningless extra syntax, since the lack of it generates a compiler error. C# already implies no implicit fallthrough, so there's no need to explicitly state that you're not falling through. A better solution (for every language, really) would be a "fallthrough;" statement or "goto case x;", which C# does get right.