Sorry for asking, but I really had my head somewhere else and I've noticed
that the profile transformations is gone and are now done in the guide.xslt.
If I have a profile that is customized (a subset of stig, but more than
common) called "MyGreatProfile" then all I would have to do is add a line to
the input/guide.xslt file as:
"Now, Commander, I'm sure there's more to your story than that."
-- [ Cynthia Torqueman and Ivanova, "And Now For A Word"]