First of all, thanks for clarifying. However, I still disagree. Obviously in the real world they werent dealing with the issues properly, or they wouldnt have had the regrets in the first place. If Riki hadnt helped them to fulfil their regrets, their regrets wouldnt have gone away, and the world would have continued to exist. Remember, they weren't supposed to survive. They weren't trying to get to a point where they could live on, because they were supposed to die in the end no matter what. They were only there so they could die without each of their regrets.
Im not sure what you mean by this. However, I would still say that Kyousuke progressed. He did have a regret that he had to deal with, after all. The only difference is, he knew the secret of the world and took matters into his own hands from the beginning.
Part of the secret of the world is that anything, no matter how miraculous or seemingly magic, can be done in order to help fulfil the regrets. I guess my theory is that Kyousuke knew the secret of the world because it was necessary in order for him to fulfil his regret.
Kyousuke did mess up. I dont believe he had this flawless plan from the beginning; I dont believe he always knew exactly what to do, nor did he actually have any control over what Riki ultimately chose to do.
Most of all, I certainly don't believe that he did it all in one try. All the bad end, those were all times where a regret was not solved, and Kyousuke and everyone had to start all over again. And don't you imagine that the world had repeated over and over again before the VN even started. Kyousuke said that it had repeated more times than he could count.
Thats part of what makes Kyousuke, and Masato and Kengo, so incredible, that they could go through all those times, over and over again. Even if Kyousuke was feigning being furious with himself during Refrain, he certainly wasnt feigning how tired he was, and how much pain he was going through. Kyousuke still progressed, we just didnt see it or really realize it was happening until then end because it would have given away the secret of the world.