Adding smoke designators to Assault

As a frequent aircraft user (both fighter and stealth), one thing that would be a helpful addition to the game would be having a way for infantry units to be able to mark larger groups of enemy units that aren't on the objective or that are on the objective but hidden in buildings. The purpose of the smoke designators would be a way for infantry units to help with stealth and fighter bombing runs. This could be given as a gadget to assault that emits a different colored smoke and is easily visible to aircraft flying overhead, like the green smoke that already exists in Redsec. This would be given to assault instead of another class because other classes already have gadgets that help aircraft (recon with the laser designator and engineer with anti-aircraft launchers), and the role of the assault class is both objective and anti-personnel focused. This gadget would come in the form of a launcher or a smoke grenade.

Would care for thoughts, both positive and negative.