i still think 1 nxt = 1 vote is the best solution. we dont want to have a situation where people can create new accounts to have a bigger voting power than before.
Please try this point of view: 1NXT = 1Vote vs. 1NXT = 0.5Vote.
For "1Account = 1Vote", if you create a lot of accounts you will get:
1Account = 1Vote is the same as 1NXT = 0.5Vote but in addition 1NXT fee to have a valid account
This helps the economic system because
any movement of NXT is good!
Increasing Voting Power leads to increasing NXT flow.
And now you have increased your voting power you have decreased your forging power.
That leads to the next NXT flow ;-)
Another point would be under aspect of Forging Pools and Transparent Forging, but this is for later...