Steve - I have only had two things that over 12 years of use I would recommend in any new updates to the site. These things are not IMHO driven by any UI Fad but items that are on other sites similar to this one that seriously add to their functionality.

1. For the question and answer forum posts a way to Vote or Mark the answers that work. The ability to see what answer actually worked for a poster is invaluable. The ability to see if it worked for or was voted on as a good answer by others is an amazing thing when trying to find the best answer/solution for your question. stackoverflow.com and social.msdn.microsoft.com forms do this and it is a huge help for those that need to use it when validating a solution that has been posted.

2. Ability for persons posting QOTD questions to see exactly what the site users will see and test that it works as expected. I have used this site to post QOTD (not as PhyDataDBA obviously) several times in the past. Many times my question was published with text and selections that showed and operated in way that was very different than what I expected. I know that I am not the only person that has experienced this.

These are the only things that I have ever seen lacking in this site. I must say that I wish other sites that are used as much as yours is daily worked as well.