Explore a thought-provoking keynote address from the ACCU 2017 conference that delves into the future of C++ and the potential of metaclasses. Discover how reflection proposals could revolutionize C++ development, simplifying code and enabling more features to be implemented as libraries. Learn about a strategic approach to improving C++ post-C++17, focusing on language and library features that dramatically simplify real-world code. Gain insights into metaclasses, their implementation, and their impact on C++ development through detailed explanations, code demonstrations, and comparisons with current C++ practices. Examine topics such as interface requirements, usability studies, compiler exploration, and the potential for metaclasses to streamline common programming patterns like value classes and mock objects.