A technology startup is building a new application that requires two distinct language processing capabilities: 1) Classifying incoming customer support emails into predefined categories like 'Billing Inquiry', 'Technical Support', or 'Feedback'. 2) Generating creative and coherent story continuations based on a user-provided opening sentence. The engineering team proposes using a recently released, 7-billion parameter, decoder-only model for both functions to simplify their system. Analyze this proposal. For which task is the proposed model an architecturally appropriate choice, and for which is it a potential mismatch? Justify your reasoning by relating the task requirements to the inherent design of the model's architecture.