Its not just something I can insert quickly, it requires a lot of tweaking to get it to work with the current system. Its more than just every 600ms also, it has to be aligned with the game ticks (which are every 600ms, but you also have to be synced with them), then there is the problem of mirror mode which has a hard enough time keeping up as it is
On top of that, there is other sorts of flicking that people want as well, not just 1 tick flicking as over long periods that can be suspicious