NCL to CWL Dragon Tracker seem to have missed a vital point T3 are not a Loco ! They serve a demand on a completely different price structure pitched more at the business market. They don't 'buy' volume. Twice daily fits more into a business market normally to offer ability to return same day. Putting additional intermediate timings is not necessarily catering to demand particularly as in T3's pricing there isn't much room for lower fares.