Adding pretty login URLs as a core feature will greatly increase WP's appeal as a CMS for non-techie laypersons.
See Chris Coyier's post, http://digwp.com/2011/01/simpler-login-url/
And Ozh's plugin example, http://planetozh.com/blog/2011/01/pretty-login-url-a-simple-rewrite-api-plugin-example/
