But, when the majority of people aren't staying anyway.....
Not saying it's wrong or even would help, but I think it could be considered at the very least.
Though I do think it's as simple as this.
People come across the game, they think "Hey, this seems neat" They make an account, log in. And once they log out they immediately forget it exists. Reminder emails generally don't work either.
I've never once seen the WOW emails I get sent and think. "You know, this email reminded me that I used to play the game, I should play it again" It just gets sent to the garbage.
It's gonna happen the same no matter what new things are tried, they'll just forget about it. The goal should be to make it harder to forget, somehow.
