It's for those people who current drip at 20 to 30 watts.
Now they can drip at 20 to 30 watts at various ohms they can experiment with. They can put more surface area in.
This is it for me.
My main dripper is a .7 but on OCCASION I bust out a .55 dual coil, so 30w tops is perfect for me.
.......... I dunno, maybe I'm wrong?