Difficulty is something I think about a lot [NB: I'm not a designer, I don't write our games or anything, this is just me rambling]
I came from
a place where the cool thing to do was rag on game developers for making content that's too easy. And that made sense, because we devoured their content FAR faster than they could make it, and we repeatedly beat content that was too difficult for the designers themselves.
I can totally understand hardcore adventure gamers looking at 301 and 302 and saying, "Wow these puzzles are so simple." But consider that most people posting on these forums are the high end of adventure gaming skill and are probably the minority. I feel like it's a success when people say they didn't have to look up a walkthrough, or that they could work out the puzzles logically rather than resorting to the spam-it-with-items theory of gameplay.
I guess what I'm trying to say is that I can totally understand wanting games that are super difficult, it just doesn't make sense to alienate a huge portion of our players just because the best of the best think it's easy >_>