Wow, as I read through this I feel like some people just can't be made happy.
First of all, with regard to the 200 watt issue. So you may not ever use 200 watts, I know I probably won't. However, it does provide you with a greater amount of flexibility than a 40 watt device. I sometimes like to drip between 60-80 and when I do I have to switch from my Hana to my Sigelei. If you will only use the lower end of the wattage spectrum, no worries!
Secondly, the LiPo issue. All of us, literally all of us, carry a LiPo with us every day in our cell phones. We are talking millions of people. They are probably the safest battery that you could carry with you. It cracks me up when people claim 18650s are safer because "they only vent". I've seen plenty of 18650s explode. Plus, with the way we vape now we are at the bleeding edge of what a 18650 is capable of handling. They were never designed for our application and any time you take a technology to the edge of its abilities it inherently becomes more dangerous. 18650s are a technology that is hampering our movement forward like a boat anchor.
Finally, several people have written about how "huge" the test mule for this board looks. Really?! The picture of the mod in the hand provides some perspective and it looks no taller or thicker than my Hana V4d. Plus, it is a test mule. No doubt device manufacturers will find better way to package the board.
I for one am excited about the DNA200. Everything negative that has been said so far sounds like nit-picking. The fact of the matter is that we now have more options, more competition and this will result in even more vaping progress. We all win!