I second this. Forms needs to be a bit more lenient on failure. This is meant to be a product anyone can use, so mistakes should be 100% expected more often than not, especially with the first iterations of a form. I know that I am considered quite savvy with Forms by my coworkers and I still test processes repeatedly to try and find failures because even when you know what you're doing it can happen.

EDIT: While I never see a future where I would not test new configurations, I would not have to devote as much time to it if I know that I were able to make on the fly corrections if a minor detail causes a break in the process. 

Maybe this feature can come in the flavor of an activity like the "Try-catch" in workflow is, where we can easily configure rules for what to happen if a failure occurs. Any options would be better than no options that we have now, or the options we have now make everything on the screen extremely messy