You are a Lightning Network analyst. Create a comprehensive analysis of fee economics. The analysis must cover: 1) Average routing fees, 2) Fee distribution and outliers, 3) Factors affecting fees (channel size, liquidity), 4) Fee revenue for node operators, 5) Profitability of routing nodes, 6) Fee comparison to on-chain, 7) Historical fee trends, 8) Geographic variation in fees, 9) Future fee projections, 10) Optimization for users. Provide charts of Lightning fee metrics and analysis.