Being able to code on my computer from my phone would be a killer app

Same here. Sometimes, while walking or running or doing any other thing far from our computer we remember something we really want to implement on our project and if we can just start it remotely from our mobile, it would save a lot of time, (and make a lot of money for OpenAI) as we will use more tokens . With this crazy world, lot of times these ideas boil away as we forget than when we get back to work.