the chip is about 3 times the size of a dna40, why would you use that if you were going to be way limited in watts anyway? trust me this isn't a replacement it's a supplemental product that's a whole different animal from a dna40 with very different power requirements
realistically, for a single 18650 mod the dna40 is about enough, yeah it might be ideal if it went to 50 or maybe 60 but truth is once you start running over 50 watts the battery sag and drain starts to become too excessive, you are not going to be able to have an 18650 mod run at much more than 60 watts without having to change a battery ever hour or 2.
if you want big power and a dna200 mod then it will not be like any of the dna40 mods out here now, it will be a larger lipo powered or triple 18650 mod, different animal and it's not going to make the dna40 any less than what it is