Been a very interesting and entertaining thread. Whatever the outcome of this journey, best wishes to all on this thread for the MBA journey ahead.
Just adding another datapoint for analysis. I was interviewed off-campus in November (probably saw one or two date changes prior to that - possibly them looking at my preference for interview location based on the explanations above?)
I've had daily date changes this week and it currently stands at 12/12 (not sure if this was morning or mid-afternoon). I do think Trivium's theory is quite plausible, because it seems to be linked to them accessing/updating an individuals application. I personally don't think they'll need to review someone's application 5 days in a row, so the whole concept of pooling into Admit/Waitlist groups seems to make sense.
I would like to believe the admit theory is correct, but then one of the candidates with an interview waiver reported the same date changes. I don't think Kellogg will admit anyone without conducting atleast a telephonic/Skype interview. Threw a near 'perfect' explanation into hot water. Anyway trying to be hopeful. Whatever happens will happen for the best.
Only time will tell. We are not to far away now.