I hate secrecy too. And we'll make sure to start open discussions as soon as possible.

The problem is that, at this point, a few things are still uncertain... AND we need some competitive advantage (read - time).

In fact, we do use your input a lot, and for the first time we decided to address the core issues raised to date: upgrading, speed, conventions, extensions installation, templating, etc. It's 2008 now, and we need 2009+ solutions to be ahead.