Last night I sent a build of the game (Lylian) to a person who doesn't really play games that much. I learned a lot over the course of an hour as he played the game, asking me questions every now and then when he got stuck.
It reminded me how much a game can be played differently from one user to the next. Something that is blatantly obvious to an average gamer (as in someone 'conditioned' through playing various games), can send someone out of their element (doesn't play games very often) to a state of confusion.
I realise I'm going to need to mix my playtest group up a little more, which will guarantee varied feedback.
Less than a month now for scheduled playtest, things are becoming serious!