Spot on.
What happens if there is a sweeping shift in commute patterns and there are more people willing to take the shuttle than what the 1-hour headways can provide in terms of capacity? If the answer is add more service...you get where I'm going...
I get the idea of using the shuttles as a 'soft-launch' (I did a lot of those during my retail days--they are incredibly helpful) but, IMO, the soft-launch window should have been full service during the 2 weeks leading up to the holidays when passenger volume was lower but was still large enough for a shake test. Whatever results from this limited shuttle will not paint an accurate picture.