Why do I need to finish the game? Does the combat system or character developement somehow magical change after Act 2, does the AI suddenly get smarter? Most of the flaws of the combat system, was already predicatable during EA. The Attribute system was even worse at that time. The core problem of the game is, you don't need to play it fully to grasp all those basic flaws. Many others are easily devirable by reading and making logical conclusions.
I don't know, if Larian really did read everything, but I suppose my amount of posts proves, that is pretty much did.
Honestly my friend and I did not like the story that much from the get go, the 'Competative' aspect totally ruins the 'cooperative' feeling, for which we liked the first game. And as far as I read, the story gets even worse later on, so there is not a huge inclination to finish even because of the story.