What I'm imagining is click a button and have it create and deploy fully configured apps for me, similar to what I can do with all the add on services. They might be paid or free or tiered etc, it might be a once-off fee or a monthly/annual subscription or an on-going charge like some of Amazon's AMIs.
There's lots of commercially licensed, self-hosted software (blog, forum, ecommerce etc) and hosted-as-a-service (wordpress.com, discourse.org, duelapp.com etc) etc that would be applicable.
Enabling that by API or in general would be awesome.