Made if back from Palm Springs just in time for a big old Front Range snow storm. Right now its dumping in Fort Collins. Other bloggers have already posted great information from the second day, so I'll not re-hash that - just link over there - James Fee, Rob Elkin, Cory Eicher.

My Additions:

First - a big kudos goes out to Brian Goldin and everyone else at ESRI who made this conference possible. In 10 years of attending conferences, this was by far the most useful conference.

Next - What can you say about the .NET ADF! Big big props to Art Haddad and his team for making all our lives easier (when it's released). We're already scheming up projects where we can use the ADF. Who says ESRI is not raising the bar? For those not in the beta program, and who did not attend, just wait! Web mapping elements are no-longer second class citizens grafted into otherwise industry standard web-sites. Expect seamless integration of mapping into any .NET 2.0 web site when this rolls out.

Ideas for next time:

Software Enginnering Practices
As someone noted in the closing session -  some sessions where ESRI talks about their best practices re: software engineering process. Many GIS developers do not come from a Computer Science background, and may not work in shops where source control is taken for granted, and having good unit tests is as important as having good code.

Real-World Applications
Sessions which show real-world applications - co-presented by ESRI and the developers would be very cool. This would inject the dirty reality in which all problems can not be solved at the coarse-grained level.

Fine-Grained Love
And - as echoed by many attendees - we love our fine-grained objects. So sessions on that would also be great. Just to kick a topic out there - "Best Practices for working with IGeometry". This would be particularly good because there are so many ways to interact with the low-level geometry objects, and some are much faster than others (geometry bags vs iterating over a collection). Add into that the "zen" of dealing with precision differences between the map frame and a feature class, and how that effects operations, and you'd have a weighty 75 minutes of fine-grained love.

Back to reality and some non-ADF ArcGIS Server work.