I find that I am constantly working around the progress being reset to 0% after a wrong answer, by manually setting the progress a step back from what it was before. I wish there was a setting which made the system do this automatically: a wrong answer should only take you back one step in the progress ladder.
Rationale: If you fail a cloze on 75%, you have already seen it a number of times, and going back to zero will needlessly fill up your review queue for some time onward. Therefore, the progress should only be reset to 50%. It is very possible that the shock of having answered wrongly will make you master it the next time. If not, well then you will have another go some time later, and you will master it eventually. If you really feel that you want to start over again, you can always reset to 0% manually.
If this were implemented, I might be ready to forego some of the typing hints that are currently helping me avoid the dreaded 0% reset.
I know, this will only work for some people, so it should be optional.