Java 1.4 compatibility

As some may have noticed, I checked in a recent Rhino 1.7 snapshot
into Helma svn HEAD some days ago. Among the many great new features
in Rhino 1.7 is the fact that it isn't compatible with Java 1.4
anymore, except if compiled with  a special Retrotranslator:

http://developer.mozilla.org/en/docs/New_in_Rhino_1.7R1

So here's my question: is Java 1.4 support still relevant to anybody
out there? I personally would rather move on, as Java 5/6 should be
available (and preferable over Java 1.4) on all platforms.

hannes