Communism

what's so bad about it again?

Agreed it's not something that should be shoved down the throat of the populous, but rather chosen after going through capitalism and then socialism. If a country realises they all must work together for the betterment of the nation rather than the individual, what's wrong with that?

"Capitalism only requires freedom of information to work, which is much easier to define/enforce than making sure everyone takes only according to their need." <-- honka honk honk
if anything is hard to enforce it's freedom of information, it's practically impossible.

also, capitalism requires freedom of mobility of resources, and as you said, complete information for all parts, which would lead to a completely homogenic market, combined with freedom of mobility of resources this will create an equilibrium market, which consists of all markets. This market will be the most efficient, and thus, everybody in the whole world will be happy.

now, let's look at communism, the world is a large happy place in which everybody does what they can and get paid enough to live even if they can't do anything, the whole world is happy.

i daresay both are equally utopian ideologies. one of them is in a complete pareto efficiency, the other is a complete social pareto efficiency(noone can be put in a better social situation without putting someone in a worse social situation).

both very utopian