whereas I also think that 600$ per coin is also far from optima, it is bitcoins biggest unit of account, and it is no problem to use a smaller unit like satoshi or bits or whatever.
There's no reason you can't to the opposite thing and use larger units to denominate values.
I understand what you are saying, but it seems billion count coins don't fair very well these days.
Maybe that's just because there have been no innovative coins which use billions of coins? I don't think having billions of coins really has anything to do with why a coin will fail.
bytecoin has - look I own 1.8 million bytecoin - this is worth somewhat 40$ or 0.08 btc - imagine I buy a coffee or a pizza with this or take the opposite I would try to buy a house with bytecoin - this is really really horrible even for a math oriented person to calculate.
I do not think we should spam this wonderful project with this, from a technical perspective, minor problem but you should really consider this.
Fair enough, im intrigued and will participate. Good luck!