Can an LTM traffic policy include the user's querystring in a redirect action?

Finally found some documentation that answers this question. It IS possible to use variables, etc, in an LTM Traffic Policy. It's called TCL Command Substitution. The specifics are discussed in this document.

In this example, the following should go in the redirect field:

tcl:/querytest2.html\?[HTTP::query]

Having that "tcl:" at the beginning tells the traffic policy to treat what follows as a TCL string to be evaluated, and at that point you can use TCL commands, particularly those that involve simple reading from pre-created variables, such as this one for the HTTP query string.