>but no, This Time It Will Be Different®.
Why do you think strawman thought-terminating cliches are an acceptable level of discourse? At best they serve to be distracting and needlessly hostile.
>but you keep insisting in trying again a system that again and again has proven itself to be horrible.
Not really; have you heard of Badiou's concept of the Communist Hypothesis? His argument is that Socialism, well, Communism has existed as an Idea for centuries, it is always the force to break down the "present state of things", it is the first element of society, the subversive one, to oppose the action of the State. To dismiss thirty years of research into Communism, creating branches such as anarchist Communism, communalism, feminist anarchism, Socialist technocracy and others with faux-empiricism is a little heavy handed in my view.
As for your support of the wonders of capitalism, neither I, nor Marx, Engels or any contemporary Communist denies its push to reduce poverty.
>shifting value from developed countries to developing countries.
"Shifting value" is a very strange way of saying that developing countries are being systematically exploited due to the low cost of labour because they have almost no training.
>but the current system has worked miracles
So did the feudal system, and in fact so did the Soviet system (which I do not by any means support).
>It can be improved
So can Socialism.
>but proposing a dramatic change to a system that ALWAYS results in bloody dictatorships makes no sense.
Capitalism itself was extremely dramatic, it came "soaked from head to toe in blood" as Marx put it. In fact, he dedicates two chapters of his magnum opus to detailing the bloody history of capitalism and the laws passed in Western Europe that allowed it to flourish.