I am probably the greatest proponent of the Weber One-Touch system. As much as I love Weber products, I hate the 3 wheel daisy vent system. This is 2015. The 3 wheel vent system is out-dated 1950's technology. I don't like reaching up underneath a scorching hot kettle bowl, trying not to burn myself in the process, having to turn three small metal tabs that are still even hotter, burning my fingers all the while having to hold the hot metal tab long enough to fine tune the exact spot where I want it.
I have no way of visually confirming exactly how far I have actually adjusted the vent because from my vantage point, I can't see the open vent hole unless I get down on the ground and look up into the underside of the kettle. The one touch system is by far, without question, a far better tool for controlling the air flow. Weber needs to place a bar graph on the ash bucket mounting ring above the one-touch control arm to show the precise location where a fully opened/completely closed vent is and all incremental points in between.