YourWatson
The idea that players are "avoiding combat" is a misunderstanding. Players are, in fact, eager for the intense fights near the final round and are simply taking the most efficient path to reach that point.
With the introduction of the POI system and the increase in Survey Beacons, it is extremely difficult to survive until the end by simply hiding. (I don't know of any way to escape a wall-piercing scan from a Valkyrie, for example.)
Securing our team's position requires a comprehensive set of skills.
Furthermore, shields now gain Evolution Points through damage and squad contribution, not just kills.