I understood what you meant, I just wanted to clear that part up because the video has mistakes. What he presents there is just the effect of lowering in-game sens to 0.3. Keep 400 CPI, use 0.3 sens and you won't get staircase movement either. Also what he shows there is pretty much irrelevant in a real world scenario because the area in which the staircase effect happens on normal fov settings is less than one pixel. There isn't an obvious negative effect to doing that, but personally I don't like how a very low in-game sens feels, the movement becomes floaty. Ymmv on that, some might prefer that feeling.

Also the term of native CPI is misleading in that video, because the sensor used there is the 3310 which has native steps in 50 CPI increments, Zowie just limits them due to not wanting to offer software. The whole "native steps" debate comes from the old age of A3090 (or older) sensors where you had to apply some trickery to gain steps between the native 400, 800, 1600 etc.and is not really applicable anymore.
It's still correct that you should not use a too high CPI, but that has nothing to do with native steps and is only because even the best CMOS sensors still jitter at settings higher than 3200. Depending on type of sensor this threshold can be higher or a bit lower even. For most sensors if you don't want smoothing you should even stay <=2000 CPI.

EDIT: my bad, he explains some of that at the end of the video.

That formula is a bit rough, because in FPS games you technically don't aim in pixels but angles in an inverted world transform matrix. Hence the "estimated useful dpi" that was already linked gives a more accurate result as it compares the width of a single pixel near the crosshair to the minimum angle you can move with the given sensitivity. If you go below that number of CPI you might skip pixels partially.

That is all explained in more detail here: overview of mouse technology

CPI =/= precision, it's just the speed of the cursor, meaning how many counts the mouse sends to the PC for every inch of movement. The higher precision in games comes from lower in-game sensitivity which reduces the angular change per count.

Also in my experience there is something like too much CPI/too low in-game sens where it starts to feel floaty. For my low sens of 60cm/360° I prefer 400 CPI@1.8 because it feels more controlled than 1800@0.45 for example.

This tells me you are as old as I am...But I agree.
Everyone is missing out on fojji though, I think he only played swedens national team for 2 cups and played with the swedish team Kompaniet for the first season of ETF2L, but he was destroying everyone. Don't know if his performance would still keep up with the much higher level of players in general, but back then no one came close.

It has hyper scrolling.
Personally the weight is less of an issue because it is wireless, but I still prefer my ZA11 over it, mainly due to shape.

Yes I have :)

The G900 is faster wireless than a Razer DA Chroma is wired, in terms of not only click latency but also motion delay. And Logitech did test it with an absolute worst case scenario in the anechoic chamber too, what Linus Tech Tips showed there was the interference of a 300 man Lan. And even so you can just plug it in then and be fine. At home you will have no problem guaranteed.

http://i.imgur.com/anoxJOo.png

They could, there is no market for that though. You'd need to go absolutely barebone and the sidebuttons would be worse, but considering the extra weight in the G100s is just as much as the battery in the G900 weighs it is possible.