There are dozens if not hundreds of different types of democracy, each with its own set of advantages and disadvantages, and many forms of democracy that have not yet been tried. Most of them would be disastrous, for example "direct democracy" as opposed to representative, parliamentary democracy could not possibly work outside of a small village.
But it's odd to look at this as trying something out. As far as I know, no political system has ever been tried out. Okay, maybe you could count the genocide in Cambodia by the Red Khmer as trying out, but even they didn't really have the intention of just "trying out" this new, accelerated path to communism.
Political systems are put in place by emerging elites after a disruptive event (e.g. revolution, war, cataclysm, mass exodus) has taken place.