One rule that evbandit doesn't go over is six-card charlie. The Wizard put the add-on for that rule at 0.16%.
This comes from WOO's blackjack house edge calculator. Optimal results means using compositional dependent strategy and dealer shuffles after every hand using a single deck. The 0.29931% house edge means a 99.7% return. Then add-on the splitting aces rule and the six card charlie and the game is 100.5%.