Cockos staff seems to consider that control surface implementation is a minor issue... :-(
For me they are wrong. And I should have been ready to pay a bit more to get a Reaper licence which implements news items like "iCON QPro Controller" and "iCon QPro Ex Controller"...
If this kind of implementation is too hard for them, why don't they allow people to join an open source project for this module ? it has been done for Novation's automap... See last page:
http://www.p-c-m.org/temp/reaper_csu...map_manual.pdf