6-10 were indeed a mess, though I wonder if they'd be such a narrative mess if the path delineation worked correctly. I guess we'll find out. I don't mean to oversell, but the entire raison d'être of the revamp hinges on 6-10 being fixed.
The swinging flag, and in fact the entire scene with Mike, was an interesting combination of the old game's flaws and the new game's improvements. First of all, the scene without the MC was (despite the errors) so much better. To me, this usually indicates that the dev wants us to play the scene that way. But then again, Anne's enthusiasm for the encounter and for a revisit from Mike were much more intense if you played it as a threesome. (If you didn't, the MC didn't get any sex at all.) That said, I was somewhat disappointed in the staging of the threesome. There've been two in the revamp that didn't exist in the original, and they were so much better and less contorted than the ones in the original. But this was right back to the original's problems, in that Anne constantly looked uncomfortable. It's almost like they were trying to recreate porn threesomes in which "opening up to the camera" is the constant focus.