For those of you who like this proposal (or not!) and are interested in communicating with Sun, here are two additional links
1. As somebody already mentioned below (thanks) you can mail the java team directly at firstname.lastname@example.org
2. There is a forum on java.sun.com dedicated to Generics which also discusses miscellaneous issues related to Java 1.5. Some decisionmakers from Sun are known to check in here from time to time:
You may find a few threads have started in response to this article already.