Yes the changes made to the extrapolations for European countries we don't directly track will have impacted all Switch software and it looks like they've now all shown up on the main site :)
That's why you guys are seeing LTD increases that are out of line with the weekly increase.
It's been clear to me for a while that all major Switch software (other than Zelda, which I've been happy with) was being undertracked, I just needed some indicator as to which specific country(ies) were the ones that needed increasing and by how much. The Super Mario Odyssey launch allowed me to recommend an extrapolation change for 'other Europe' to Brett when those figures came in (he'd previously been resistant to the idea but this finally convinced him).
So for a lot of Switch software you're basically waiting for official sold through numbers as a reference point to adjust tracking?
I initially came here to see if you were planning on adjusting any Switch numbers since Splatoon 2 seems very undertracked, but (after reading OP and) seeing the mammoth project you have on hand here I can only give cudos to you.
Thanks for your hard work!