The IsValid column in Column Properties is incredibly useful. However, it would be nice to be able to see this for the entire DXP. I find that I use this feature most in large (i.e. lots and lots of tables) projects, which means that I have to go through each table one at a time and sort by that column. I would ideally like to see this for all tables in one place where I sort one time.
Additionally, I am noticing a common theme in all of the things I would like to see improved in Spotfire -- efficiency. There are so many useful features and functions in the software that we find ourselves using them a lot, but they aren't efficient. This is one example.