New fallacy?

May I suggest a Silver Bullet fallacy: the belief that there is a single perfect solution and all partial solutions are therefore unworthy of consideration (if not heresy in daring to suggest them).

The proposal of a "Silver Bullet" fallacy appears to be addressing a real cognitive bias or flawed reasoning pattern, that of oversimplification or black-and-white thinking. This is the tendency to see things as only being in one way without considering other possible solutions. However, it's not necessarily a new fallacy. Concepts like "all-or-nothing bias", "perfect solution fallacy" and "black-and-white thinking" already cover such oversimplification within the realm of cognitive biases and logical fallacies. Therefore, it's more an interpretation or specification of those existing fallacies than a new one in itself.