I must say Portal 2 left me incredibly cold. I constantly felt like the game was telling me what to do, what to think, what to see. At some point all manner of incredible things happen and I was just standing there, thinking: "Would you like me to do anything while you're busy showing off?"
Jeroen, I'm surprised to hear you voice this particular criticism of Portal 2 given your recent update to Dinner Date which removes the need for the player to interact at all (as a sidenote I thought your press release couching this update in purely positive terms like "adding"/"recognizing"/"expanding" was very funny+clever). I'm curious what the distinction is for you between the way Valve has handled this tension between interaction & non-interaction vs. what you're doing (& are interested in continuing into your next project from the sound of it).