The ability to bug out is of extreme strategic value. It is the complaint of tincans that led to nerf of agility builds in various ways. In archers with rapid firing bows, it gave the ability to have perfect measure (inability to be hit while delivering hits themselves).
Battle, where a majority of players live, is not a 1 vs 1 theoretical situation. Smart players recognize when to go down in a flurry of swings, or when to haul anchor and take off back to their team's scrum (I won't poorly describe it as a battle line). In strategus, however, there certainly are battle line/shield walls to get back to hide and reload.
A light armored infantry with weapon and xbow and bolts, should not simply be able to bug out when the tincan gets into range. A light armored with only a melee weapon, certainly. That is what the difference in the builds should be. The ability to take hits vs the ability to control the engagement. But add in a ranged component for the light armored infantry, and they should no longer be able to extract themselves when the tincan gets close. They control the engagement at a distance now with a bolt through the head, not by being able to run away when they miss their shot.