The problem is that different communities have different ideas of value. Right now STEEM stakeholders (Steem Power holders) determine what has value on Steem.

STEEM stakeholders determine what has value on Steem!
In order to support this, we will donate our power, as we used to do, and create state governed use of means of production. This fantastic idea is also known as socialism. We are social network, we need to implement socialism :D

It is tyrannical to force one community to conform to the standards of another, and it's even worse to force every community to conform to the standards of one community

It would be tyranical to make some general rules, but central planned economy *(giving the immense power to some) is not a tyrany. It's more like... Stalinism :D

If the killer-app of cryptocurrencies is their ability to align the incentives of various people within a group

Fantastic! Nobody have ever discovered something called - points?! Can you imagine, players can earn points, and form some sort of leaderboard