On the beta testers front I think it's not impossible to get a dozen or more full time devs at a major bank I work at to commit to downloading and using it and giving feedback - can you indicate what might be useful ?
This would be a big help. The process is simple. Download the beta, try-out the features, and let us know how they work out in real world code -- is it learnable or prone to misunderstanding, are the docs intelligible, does it solve the problem it was intended to solve, does it fit in with the rest of the ecosystem, etc.
APIs are really hard to change once released. Prior to release, we can fix just about anything.
