The timing/twitch stuff, certainly, but simply being able to place portals in greater area? Correct me if I'm wrong, but wouldn't they just have to have different "texture/trigger set-ups" that would purely equate to respective difficulty levels? E.g. 'hard' would have the bare minimum of places to put portals for being able to complete the level, with easy just giving you a hell of lot more space to put 'em. Eh, I don't know, so I'll shut up now 
It was more of wishful thinking. I'm not in the camp banging on about the game being dumbed-down or anything. Like I said, well worth the money and I absolutely love it.

It was more of wishful thinking. I'm not in the camp banging on about the game being dumbed-down or anything. Like I said, well worth the money and I absolutely love it.