I agree. An open bracelet would be cool but from a bussiness point of view it doesn't make that much sense. There are countless of startups who refused to focus

I agree. An open bracelet would be cool but from a bussiness point of view it doesn't make that much sense. There are countless of startups who refused to focus on a core target market and failed. Instead what you should do is focus your development efforts on the core product and listen to community feedback for cool ideas, then provide the necessary API for them to build it. Which is basically what these guys are doing.