If you were to use a centrifugal axial fan instead, won't you be able to achieve higher flow rates and better pressures? It seems like the efficiency of these motors are very low.
Lower pressure differential and lower speed per blade translates to lower noise levels.
Additionally, for this sort of applications, higher speed would mean higher torque (scales with square of airspeed) and that converts to higher power usage; many blades allow to keep a decent flow while keeping the pressure, and resulting torque low.
Both of these factors are important in laptops. And while better flow rate would be desirable, higher pressure is absolutely not needed.