Im a bit unsure this game will deliver on all accounts. Its nice that you have a ton of different options to solve a situation, but the real question is: will it make a significant difference later on?
If it doesnt (ala Fahrenheit - Indigo Prohecy) then you might only have a few variations in dialogs/riddles along the same path. Fahrenheit was especially bad in that regard as you just needed to replay the very last sequence to get each and every ending. (and TBH the only effects I noticed from solving lucas scenes was slightly different options in the interrogation-scenes, and afterwards there were only some small and immediate effects on your choices - if you had any that is ).
If it archives the unthinkable of having alot of branches through the whole story (close to the extreme of having 2 totally different adventures for each branch), then I dont think they can put their attention to detail everywhere and provide a sufficient long adventure. The amount of work would just rise exponentially. Even thought I dont care if a game is short, I would expect a story-driven game to be long enough to really dive into it (6-8h).
Nevermind (some of) the press would be ranting about how short is it, neglecting that you could play a good game as often and long as it interests you.