Hmm, interesting.
I have been doing C# for quite a long time but I didnt know you could change as much of the code during a debugging execution, so excuse me.
I think in UiPath it might be harder since the .xamls are compiled into .dlls before being ran and as such I think it might be tough to engineer such a thing.
That being said, perhaps we can talk about the issue from a different angle, are you using test cases? Cause in my experience alot of the stuff you talk about are not really much of an issue if you design small re-usable workflows and work in a test driven design mindset?