Air mechanics

An air mechanic would be very useful for farms (and not only).

Maybe it could be obtained through a dispenser-style block that produces an air flow, moving drops and mobs for a certain number of blocks and with a certain adjustable power, in order to replace it with water where it is inconvenient/dangerous or not feasible to use it for move the drops or mobs.

The flow of air would stop, like liquids, as soon as it encounters a SOLID block. But, unlike liquids, it would not expand to the sides, but only along one block of width (1 "generator" block = a 1 block wide airflow). Finally, it would make sense to pass the airflow through water-loggable blocks or bamboo (without breaking it unless certain power) etc.