One interesting idea from rockethead was to distribute 8 billion as stakes, then distribute 888,888,888 as rewards to nodes.
I have nothing against changing number of coins as long as percentage everyone gets remains the same.
If you add 888,888,888 as rewards to nodes everyone's slice gets 11% smaller... I don't think this is acceptable.
Also, we better avoid repeated 8: http://en.wikipedia.org/wiki/88_%28number%29#In_white_nationalism
8 999 999 999 then.;)
On the dilution, by the time we get to the addition of the coins, we are looking at 10 years down the road and the coins may have changed hands so many times over that it is no more significant.
Also think of it as mining fee as well. Bitcoin is slightly >50% and by the time it gets to 24 million it would have diluted 50%.
If things happen tomorrow, then I agree the impact is significant. But if this happen over a long period, it is insignificant dilution. Further, if NEM value goes up, it would more than compensate for it. If it goes down, it does not matter anymore at the end of the day.
Finally, it gives new comers hope to make a few NEMS. After all we are looking at fair distribution.