Well,
sometimes, the AFS needs the user to make empty draws (without pushing the button) due to the fact that the atomizer doesn't get enough liquid.
The reasons why the atomizer doesn't get enough liquid sometimes, are simple and obvious.
1- The hole on the atomizer could be a little clogged by the liquid after some use.
2- The liquid could be a little thick.
3- The hole on the atomizer could be smaller than what a certain user might need, especially that the force of the draw and its length, can vary from a user to another. But then again, we can't make a bigger hole for obvious reasons too.
4- Even if the atomizer is itself ventilated by different holes, the pressure inside the AFS can sometimes become too high for the liquid to get easily inside the hole. I noticed that each time that I opened the AFS from the top, it releases a little pressure and sometimes it is so strong that it is enough to pushe back some liquid in the atty, and I get a little leakage from the bottom of the atomizer. Then after that and when I close back the top of the AFS, it works smoothly until a slight pressure builds up again.
..........
Bottom line, there will always be casually a certain need to make empty draws to fill back the atomizer, no matter what. It is either this, or a bigger hole that will flood the atty.
That is perfectly natural and there is no magic in there. It's simple physics of fluids.
..........
My idea, is to assist the AFS with an integrated flush mechanical push button, that will be used when the atty is a little dry, instead of having to make a number of empty draws.
I find it quicker and more comfortable.
Besides, it might assist a lot when the user is vaping a heavy liquid or is having a little clogged hole after some time of vaping.
Since the AFS is completely sealed from the inside, it would need a really small and almost invisible little button, hidden somewhere, that would instantly force the equivalent of 2 or three drops inside the hole, no matter the liquid, and it will even open the hole if it's clogged.
Of course I have also in mind an old design for a full manual AFS with a system of valves involved but that's another story...
