I"m on Chapter 14. While I know I have the last several chapters (and from what I hear that's some of the stronger sections), my experience so far has been mixed. This game is very bipolar. At some points I'm enjoying the hell out of it (the Wall Market section was great) but other times it's just a slog; I'm not talking about JUST the added stuff as some of it was good (Jessie''s backstory, and such) but gameplay can be a slog; when in the dungeon-y sections proper, it feels like they took the worst linear parts of FF XIII and put on a 7 coat of paint. It also doesn't help that the pacing is just all over the place as well. While FF7 :RE is far from the only example, I get annoyed when there's those "you have to do this immediately/time is of the essence!" narrative beats, but then lets you go round up some chocobos or something... just because.
So far, high highs, low lows. The best analogy I can give to my feelings on this so far is that for me, this is like the video game equivalent of the Hobbit movies... some good additions but ultimately very bloated. Especially for Act 1.
Gonna keep trucking along...