Something more than configuring the transparency of your windows? :)

Morphos could be used as a web server. You can write good GUI applications with Java. You could run a lot of existing java software (like FreeCol :) ). You could use Morphos for Java development. Lot's of other options too. It's not going to save Morphos alone, but I think it's one of those things that any good OS should have these days.

I don't think Java or .NET are popular by accident.