it certainly would have to be held in alpha/beta state for a very long time, as for complexity that really would depend on how far we wanted to extend the idea, but I feel if at first we limited it to very simple (common) types of deployments, it would be a worthwhile and not major time expensive adventure.
From that it would be possible to get a feel for just how many people re interested in such an installation method and it does open the door to so many other users. (So yes a simple jetty deployment for starts may be just the ticket)
Absolutely but I believe on some platforms it will soon because the preferred method (having no other choice than manually installing downloading/installing war standalone)