Thats a very stupid move, dont do it. 4 billion is the way to go.
That is a smart move. Do it. 8 Billion is the way to go.
If I understand correctly, after the doubling, the fees will be cheaper by 50% and sending NEM will be 8 times cheaper than sending NXT. Am I right?
No, the fees will double too. The fees are already very low. We don't want to make it too cheap to spam the network.