Player Left Click Trigger

It would be amazing if you add a trigger when a player left clicks air. Actually developers can take profit of players breaking blocks (left clicking) but only blocks, it would be amazing if it could also be triggered when player does that to air.

I make plugins and well, the developers community Minecraft created is awesome, it would be great if you listen to us and add this great and useful things.

The entire spigot/bukkit community will be grateful for this.