I have led the Survey project for nearly a year now and the only real change I have made is to upgrade it to ASP.NET 2.0. Some reasons for the slow progress:

• You must maintain the upgrade path and consistency - I made my first mistake by changing the font and I created a default setting for answers. At first I didn't think it was a big deal, but people upgrading from previous versions yelled very loudly. Then I was able to understand. There are expectations with Core modules. People expect consistency. I thought I would be creating new features and instead I was fixing my own mistakes.
• You must fix bugs - I have put a lot of work into the Survey module but there is no new functionality. All I have done is fix bugs. With millions of people using the code the bugs never stop coming in. Many of the bugs have been there for a long time but are just reported.

I do have new features planned but I just wanted to point out some of the issues that slow down development.