@chlab: you may want to post something up on the sublime github issue tracker
as well, since it seems that userecho is falling on deaf ears these days
For anyone else interested in whitesmith indenting, it does look as though this could be done with a plugin. I found this plugin for customised lisp/clojure indent behaviour
which should serve as a useful starting point for writing a custom autoindent, whitesmith style. I'm not interested in whitesmith myself so I'll bow out here - but I did take a look at the plugin code and upon cursory glance it seems to have all of the needed elements.