As i am higly interested in async frameworks, i'd like to see: 1. Documentation/tutorial as absolute priority. A lack of any do wonders against any project.
2. Non-relational dbms as primary citizens. This is easy to achieve (if not already done, there are some mongodb related commits in diesel repo) and could encourage lot of people to spark. 3. Useful and working demo app. Those three things are in my opinion enough to start highly appealing web framework.
