#2 High-intensity, attacking football
Unai Emery's famous quote when he joined Arsenal last year read "I prefer to win 5-4 than 1-0" which had every fan hyped up for the new season. Although Emery stuck to the possession-based attacking philosophy of his in his first year at Arsenal, the Spaniard slowly and steadily switched back to defending deep and trying to see out one-goal leads against mid-table and low tier teams, especially this season.
Sooner rather than later, fans begun noticing it and Emery wasn't a fan favourite at Arsenal anymore. His conservative approach to away games baffled the fans and Emery showed no sign of changing his style. However, Pochettino does not have a record of trying to defend throughout the 90 mins.
The Argentinian plays a free-flowing brand of football and shows tactical flexibility when things go against his plans. Pochettino's high-pressing football is exactly what Arsenal fans have been crying out for, and he does have the quality to get Arsenal back to where they belong.