To get back to the original topic - I'm all for the proposed syntax change. When you start using LINQ a lot, passing IEnumerable<T>s back and forth, you start hating how long it is - not to write, since we have autocomplete intellisense for that, but to read. It fills up the code with useless letters.
I second the * syntax, though that would cause problems with unsafe code. A coworker of mine wants to just tack the plural 's' onto it, so an IEnumerable<string> would just be strings. Of course, that would mean that an IEnumerable<Bus>, for instance, would have to be correctly parsed by the compiler from Buses. And that's before we even make the compiler understand the shorthand for IEnumerable<Mouse>...