The supply has already been decreased from 500 billion. There's a reason for having that many coins, which is having a very small minimum unity that can be used for paying for micro-services, e.g. forwarding a single data packet. (That's my interpretation of it.) I've always been of the opinion that reducing the coin supply to 50 billion was already a mistake (albeit a rather small one.  )



Yes, this seems to be the next item on the todo list, according to what Monoxide said in Discord.