Alexander via email:

The most difficult problem is how to distribute coins, and I think your
evaluation mechanism will end up as a ponzi scheme or some mechanism where
I need to pay a fee to some initial, powerful group of people that hold the
most coins, otherwise I will not get my money for my good deeds. I think
the social system will look like feudalism as initial contributors have
more of a say.

Similar to all the middle-men we have today (banks, politicians,
consultants helping with regulation), there will be lots of fees to be paid
to be able to compete, and the people controlling access to good deeds will
be profiting.

Democracy has the advantage that you can actually count the people and each
person can get a share. Capitalism already has a pretty good system for
benefiting those that provide value without the problem of ganging up on
the small man and extorting a fee for participation like I fear your
proposal will lead to.