As a developer I like the idea, but I think such a column will be too complex for most users and does not really fit our plugin. We’ll have to think about a syntax for the calculation that could be used safely from the admin overview etc. Maybe when I have some spare time, I will think about a solution and share it with you.
checking back to see if any progress on this topic or others interested in the same thing. One thing I use Calculated Column for heavily in our intranet SharePoint environment is to make hyperlinks with various details in the <a> tag. This way I don’t have to code up a web page and custom web part (equivalent to WP PHP filter, Java applet, or widget).
I didn’t get to look at the filter article yet. Looking now.