A recent topic about this issue was started and closed very quickly before I had the chance to read it. However, I would like to bring up another very similar related suggestion to that mentioned in that topic.
I suggest that for normal tournaments, such as hourly tournaments, new users can still be allowed to play, but that there should be a games played requirement for special tournaments, such as "daily", "weekly" and "monthly" tournaments along with "marathons". This still allows new players to play in most tournaments, so most people will not be discouraged from laying in lobbies, while the most important tournaments, those which I mentioned above, will be much less likely to have cheaters that ruin the experience for everybody.
I suggest that for normal tournaments, such as hourly tournaments, new users can still be allowed to play, but that there should be a games played requirement for special tournaments, such as "daily", "weekly" and "monthly" tournaments along with "marathons". This still allows new players to play in most tournaments, so most people will not be discouraged from laying in lobbies, while the most important tournaments, those which I mentioned above, will be much less likely to have cheaters that ruin the experience for everybody.