I like entering lotteries.I think the lottery is fine as it is in terms of feedback.Maybe think about getting some PR to help the games a little though as most people are not entering yet due to the fact that the games are lacking in spice.People seem to have doubts about fairness even though this is the most fair game I've ever seen.The lotto games in my home country are not fair as selection is based on who pays the biggest bribe to the guy who chooses the winner rather than a random number generator.
You also need to come up with a good ad campaign that shows people what this is all about.Once they feel this is right for them,they'll enter.At the moment,there kind of isn't one.