The first episode of BoB focusing on training and made a huge difference for me, because it helped solidify who the characters were, how they got to be trained soldiers and why Easy Company was the way it was.
In particular, I thought it was incredible how they set up their original CO, Sobel, to be hated as a self-important hardassed bully; while the character never really redeemed himself (due to his other less desirable qualities), for the entire rest of the show you spend the whole time thinking, jesus christ, if he hadn't put them through hell during their training, would they have made it?
There's really nothing like that in the Pacific yet, and we have no reason to root for any of the characters beyond them being Marines in WW2, like everyone else who appears on screen. They just blend into the background too much because we don't know them. That's really the problem, for me.