Could you please enlighten me on the potential future of IOTA? I'm particularly interested in understanding how it might revolutionize the world of finance and cryptocurrency. Could you explain its unique features and the potential benefits it offers? Also, I'm curious about the challenges it faces and how it plans to overcome them. Given the rapid evolution of the crypto space, how does IOTA position itself to stay competitive in the future? I'm eager to hear your thoughts on its potential growth and impact on the broader financial landscape.