In an unranked match, you have excellent feedback to your skill progression. You know: 1) Am I winning more or less, 2) is this tactic better or worse, etc. In short, you can see if you are progressing. Moreover, if you get edged out, beaten, steam-rolled or even utterly annihilated, you can see what tactics your opponents used, and try to adapt. You have some kind of active mechanism to learn and get better.
In hidden Elo matches you lose all of your feedback. I understand why people want even matches. It makes sense, and not everyone has the same goals, sense of competition, or inclination toward video games. With Elo ratings, almost everyone will win pretty close to 50 percent of the time.
But, this means that unless you are the best or worse players you will have no idea how well you are doing (assuming the distribution is mono-modal; if it's bi-modal or multi-modal, nobody will know). You could be entrenching bad habits, playing bad positions, you could even be actively getting worse every match, and you would have no idea. Not only do you not see the moves of good players, you do not have any feedback as to your level of play. It will almost certainly result in an undesirable level of stagnation.
Available Elo scores gives the best of both worlds. It gives even matches, while still allowing people to learn, adapt, and compete. It is utterly necessary to be able to answer the question: "Am I getting better." This is very important for interesting play. Perhaps Community Warfare will introduce a different method to do so (if so, very cool), but until then, we as players absolutely need some indication that we are learning to be better at this game.
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Troggy
Edited by Niko Snow, 05 March 2013 - 11:18 AM.