Yeah I kinda of agree with you on Episode 6. It had the weakest climax out of any episode, and the closet mystery being a mess doesn't help. There were better ways that could have been done.
Also, I think when people talked about you not loving the end of Episode 6 I think they mostly refer to the circumstances surrounding that last puzzle instead of the puzzle itself. I didn't think those circumstances were that exciting either, so hey.
But everyone seemed thrilled by it. "How could you not think it was dull?" They were incredulous by my reaction, and when I look back over the period between ending six and starting seven, I don't see any acknowledgment of why I reacted so unexcitedly. I even pointed out a good bit before it happened that the twist was that Kanon wasn't in the closet. It wasn't mind blowing and it was expected. It also wasn't a giant magical "how'd they do that?" because I outlined how it was done in the posts beforehand.
Kanon is Shannon is hiding in the closet is the hand the magician wants you to look at. All the while, we never really see what condition the seal was in after Erika turns back from the bed. That's where the ball or coin really is. And if it really is Natsuhi/Hideyoshi's room from Episode 1 (yay Portal window!),
Assuming the closet's right by the door, ample time and room to get in and out. Even this is possible for Kanon.
Or maybe I'm misinterpreting your last statement. It just seemed they were very surprised at my apathy when I showed why I was apathetic. It wasn't necessarily comparing to their old experiences because there was a lot of, "If you can't figure it out, just wait until episode 7. But you should try before then."
How wasn't it dull? All this build-up for a "How does Battler escape?!" and... it's solved by a weird use of the red truth in sealing a room, someone showing up to save Battler, and then the game ending while Erika's back is turned checking under the bed. When she checked the closet and saw no one was there, the game ends. Yeah, I'm curious how Kanon escaped (and subsequently died on the second twilight), but... yay Battler and Beatrice are together, yay Erika's dead, but... it feels like a cop-out more than anything. Like, if they went any further, they'd have to reveal the trick and it'd be over. Erika sealed herself in just as much as Battler had and... it wasn't a satisfying victory. Just... "Look! Impressive isn't it? Where's Kanon? Hmm? You're dead now, Erika. Buh-bye."