I don't have time to read the whole thread, so If I repeat someone else's idea just ignore mine. I was going to order the Chuck, but decided not to as I get plenty of battery life with the long VK battery, guess this is enough mod for me, lol. The kits would be nice if they came with both wall/USB chargers, PT, some kind of cord that can go between the wall charger, and the PT so it's longer, also between the pc and PT, a different mouth piece that is more user friendly, and easier to remove for filling, etc. I have a battery pack that works great with the PT, possibly add one of those. Maybe a needle nose type bottle that you could use to get the liquid all the way down the carto. I would perfect the battery and offer less choices, but more colors like purple.