I like the idea of combining recognizable features, although I think this way you might be loosing the chance to create more unique logo.<p>I really like the toned version (not really a fan of flat design), but I think your mono version should have thicker lines/boarders.<p>Also I just came up with an idea to make the IO in your mono version to look like a pictogram guy with his arms crossed on chest and make the rocket flame to be part of his body like <a href="http://www.comicbookmovie.com/images/users/uploads/8073/Cannonball_017.jpg" rel="nofollow">http://www.comicbookmovie.com/images/users/uploads/8073/Cann...</a> but keeping it minimalistic.<p>Somehow, I cannot fight the resemblance: <a href="http://fc00.deviantart.net/fs70/i/2010/231/7/1/Pokeball_Template_by_Poke_Lab.png" rel="nofollow">http://fc00.deviantart.net/fs70/i/2010/231/7/1/Pokeball_Temp...</a> :)