We have a new marketplace (in app) launching this month. In the following months a web component will be added to enhance discovery on that front. Before I was hired, I even went so far as to build a concept community marketplace. I never released it because after thinking about it I came to the conclusion that it would only bifurcate the customer experience. In theory it seems like an easy thing to do, to just stand up an marketplace on the web.
Two things you are going to keep hearing over and over:
Reliability and Stability.
We want SmartThings to be the best platform for connecting the things around you and making them smarter. To that end, enhancements will be added in a thoughtful manner and continue to evolve over time. I think all of this is great feedback and welcome the continued discussion.