Here's my thought on collecting time. I used to have the task of tabulating the hours. It was a nightmare. After rhe second meeting of the new month I would total the time and look for missing reports. I would then telephone each publisher who was normally regular and request their report. If I didn't 20% of the congregation would be irregular.
e.g "Hello, Brother Forgetful, how are you? I am sorry to hear that your ingrown toenail is troubling you again. Uhm, what I am calling about is your FS report. Could you tell me what you want to report:"
Most would report their 1 or 2 hours immediately without having to refer to notes or a calendar.
Now with the change, the CBSO is going to obtain all the reports. If he doesn't get them at the CBS he is going to have to track down everyone in his group at the next meeting or make the phone calls. Half these guys don't even know who is in their group. The poor secretary is going to get lots of incomplete reports and will have difficulty getting the full congregation report tabulated by the 6th.
I can't see that adding another layer of management to the reporting system is going to help. In my experience, elders were among the worst offenders for getting their FS reports in on time.
Reporting 15 minutes minimum is going to have some affect on averages. If the number of regular publishers goes up the mean average hours per publisher will go down.
Thirdson
'To avoid criticism, say nothing, do nothing, be nothing'