More events could certainly hurt. For a clear example, consider if Wizards somehow managed to host infinite tournaments over the next year. Now, there's only, what, seven million Magic players or so, including the casual ones who've never been to a tournament, who probably make up 3/4 of that number? Clearly, this isn't enough, what with the limited number of hours in a day, to fill up an infinite number of tournaments and turn a profit, resulting in Wizards taking a net loss of infinity monies. Now, obviously this is a ridiculous exaggeration, and without statistics, it's hard to gauge whether or not more Eternal events would help or hurt Wizards' sales, but it certainly has the potential to.
Quote from ElheirstRemember that with Lorwyn, they were going to break a fundamental rule. I think with the clues we got into FS and this little tidbit from TCG, it will be Planeswalkers. Also gatherer now references the planeswalker type. Why do it so early. If it isn't Planeswalkers, I will submit a video of me tearing up one of my moxes