I think good distribution is important.

As I know, NXT had ~ 1500 active accounts in march 2014.
Thats not so much.. Way from 70 to 1500 was veeery long - 5 months.
1500 to 50000 should be faster.

With this coin we're gonna have 2000-3000-5000 at start plus (I hope) fast and nice web client.