I agree. First, this is a team made up of part-time workers, not full-time workers, which is not what I was expecting by reading the title. So working 30 hours a week is really really not that special, consider they are PART TIME.
Regardless, there are weeks people will have to pull extra hours to complete work, such as during product launch week.
If this were a program made up of full-time employees, I would be interested to see the number of overtime hours this team will accumulate. Otherwise, I don't see what's so interesting about this experiment.
BTW, I work extra hours because sometimes I just want to work extra hours. Sometimes, I just want to pull extra hours to get the most boring stuff out of the way.
Instead of a 30-hour pilot, make Friday a half-day for everyone.