I would have each member write down what they want or expect from the guild, or things they would like to do or see, or learn. Give them an envelope already addressed and some paper, and a reasonable dead line to get them mailed back in. For the ones that have stopped coming, I would give them a call, tell them how much they are missed, and tell them your sending this to them and ask them to return them in a timely manner. If you want your guild to be successful you need the members input.