You clearly skimmed since you are way off on three points:Some things I noticed while skimming through
That was just Plasma Grunt A.Who was the guy from the preview who wore a similar shirt to N though? I have always assumed that he was N wearing a cape but that seems to not be the case.
I think the implication was supposed to be that it happened because Pikachu had gotten zapped by Zekrom in BW001.The only thing that looks a bit out of the blue is Pikachu "synching" with the Meteonite IMO. I don't recall that being foreshadowed and not even the Meteonite's backstory seems to explain it either, unless I missed something here.
The strange thing about that is it wasn't due to this two-parter getting banned, since the remainder of BW's first year's episodes (up to the Nimbasa Subway two-parter) were firmly in production at that point, and the episodes up to the Milos Island two-parter not far along behind. I truly believe Team Plasma was supposed to return at the same point in time we got Krokorok's return and the Black Hero's Ruins (which had the Golden Dark Stone that would've been used to bring about a Zekrom vs. Reshiram showdown), but this two-parter's banning plus B2/W2 put the kibosh on those plans. I still personally enjoy BW, even its Team Plasma arc, but knowing what it could have been will still always be a source of disappointment.I wonder if the staff decided to halt pretty much all ongoing story arcs that showed up in this two-parter for a while, as they re-evaluated how to approach them.