Okay I have come across a few moments where a range unit would back peddle while you are trying to attack them with left click, they just have enough speed backing up that by the time you swing you miss. And don't get me started when you have 2-3 Ogryn's with shotguns back peddling stripping your suppression, popping inoculator to regen Suppression, popping Void shields to try an get a few hits or run away, Then losing that too just to be knocking you back or down forever, Trust me I have tried to work around it and the only way I found is to have a bigger gun then they have. So for the melee Builds I see one way to improve this is by having the left click skill a moving swing instead of standing one, While they back up you are moving forward too, plus the melee combat will feel much more ARPG (Action rpg) then SRPG (Standing rpg). Movement in the game feels very sluggish or clunky. The auto pistol has a good skill to move and shoot but that is just toward what you click at, would be nice to be able to shoot an move with most of the range weapons in any direction.
As a side note this issue is not noticeable on silver or green mission to much if at all, on the yellow to red ones where I like to play at it's unavoidable to have this happen especially against Rebel Guard.
Just a idea i'd like to put out there and see how others feel.