Aye, points 1&2 were confirmed by Nutaku rep. Nordland. From what I've seen point 3 has been some friendly advice going around from players of the JP version who say the devs wield the ban hammer without impunity and have a keen eye for spotting alt account use in aiding other accounts.
So apparently their new stance is everything was as it should be and that the only bug was bosses not spawning higher than 8.7mil! I think as a community we all should be in disbelief about a statement like that. Nordland mentioned the Elite Guard event is in line with the very first JP event, implying there were no lightning bosses in the first event on that side either and that the bosses just got more hp in the second half.
Fair enough, I can accept that. That does NOT mean that they can just blow off the discrepancy between a level 99 bosses having 900k hp to level 100 suddenly jumping to 8.7mil. And the fact there have always/still are some scattered bosses in the 100s and 200s with 4-5mil hp totally shows that there was a messup somewhere along the line but they're just trying to cover it up and act like everything has been all good.
Those 8.7mil bosses obviously screwed over the majority of the players and made so many of us start to drop ranks fast. If they stick with this "nothing was ever wrong with that" approach and try not to give any compensation it really will leave a bad taste in my mouth. I've remained supportive of Nutaku through a lot of their bumps as they work on pioneering these games over to us, but definitely not happy with how this one is going down so far.