There is a number of units that'd benefit from a speed filter for effectiveness in mixed engagements. It is not uncommon to see assaults/skirm/arty whiffing a lot of shots against speedy targets while other targets are possible. The existence of such a widget would change how mixed unit formations fight in general, increase effectiveness of slow projectiles while reduce survivability of stop/slow targets.
In the "it is all arms race of quantizable behavior all the way down" sense, one might want better dodging behavior for different situations, especially with regard to "travel speed to dodge frequency/distance" tradeoff. Against seriously long travel time weapons like impaler you'd want to stop to fire units like emissary to move between shots too, perhaps with someway to force it to only fire at targets toward of the hull to save on the unpack time.
Or maybe emissary would have a dedicated push kodachi on tiny guard orbit (within bump range) to push it around in this new meta. And then there is fencer as a skrim that you have to micro to begin with...