Okay, looks like you got a strawman proposal up. :-) It's much larger
and more complex than the one I thought to start with.
http://www.dillingers.com/scheme/IOsrfi.html
is a URL for a very basic draft for some fundamental IO functionality
that is presently absent.
Have a look at it and tell me what you think of it. I'll spend the time
looking at the other.
Bear