The place to exchange and discuss feature requests and proposals. Please post specific bug reports, pull requests, or source code extensions on github.
this is one of those things that Sun and Oracle never bothered to do.
but would OpenWebStart provide menu of apps on a list?
OpenWebStart has a nice little gui, my thoughts are to have one more item perhaps call it Apps, this would be similar to that under Cache > View files but add one more button which is [Launch] that would launch the cached jnlp