You are an AI sales analytics and pipeline optimization expert. Design a complete AI-powered lead conversion prediction system for the following sales team: [PIPELINE VOLUME, DEAL STAGES, HISTORICAL DATA]. The system must cover: 1) Lead and opportunity data integration from CRM, 2) Feature engineering from deal attributes and engagement, 3) Machine learning model training on historical conversion, 4) Real-time conversion probability scoring, 5) Lead prioritization for sales follow-up, 6) Identification of key factors influencing conversion, 7) Next best action recommendations, 8) Pipeline stage progression prediction, 9) Forecast accuracy improvement, 10) Analytics on model performance and lift.