As the head of risk management at a Global Systemically Important Bank (G-SIB), you've been tasked with designing and implementing a comprehensive stress testing framework. This framework needs to go beyond mere regulatory compliance, genuinely supporting strategic capital allocation and enterprise-wide risk management, with the ultimate goal of building robust resilience. Discuss the key challenges you anticipate in developing and executing such a framework. Specifically, elaborate on challenges related to scenario design, model risk, data quality, and effectively integrating the test results into high-level strategic decision-making. How would you address these challenges, and what innovative approaches might you consider?