BravoBuds
He can use the smoke as other limbs, as if they were tentacles, and strengthen them with haki. He can also try to spread smoke to increase the range of his observation haki, and even harden the smoke with weaponry haki, and use it as blades. And there are many ways to use an akuma no mi, there is no such thing as a weak akuma no mi, there are users who lack imagination. Of course there are akumas no mi more destructive or versatile, but all have potential.
BravoBuds:Honestly speaking, I actually consider Smoke Smoke fruit good. You just have to use it well. Disadvantages make it even more appealing, in a sense that overcoming those bring more satisfaction.