Its obsolete if you expect *everyone* to carry something that can engage at 1000 metres if every contact you have is at 400 metres or less (as post wwii combat analysis of 'war in europe' showed and 'at the time' experience in malaya, korea, vietnam and the like showed).
In those cases you want everyman to be able to put down a massive volume of fire to win the firefight, your offense at range is provided by your squad LMG (in the case of the M14 this was supposed to be one of the support versions that was heavier to absorb the recoil iirc). The 'squad lmg' was shelved as an idea when the m16 came out but soon brought back in with the m60 being attached directly to squads as the riflemen still couldnt equal it in a suppressive role and at range.
NATO doctrine from the 60s to the 90s (and i stopped learning about small unit tactics in 2001 when i left the army) was for a 'gun group' to supress the enemy while a 'rifle group' flanked , got in close and used automatic fire and hand grenades to take positions.
The point being that for a very long time, like until the recent engagements in iraq and afghanistan the priority for an infantry section was volume of fire and being able to carry a lot of lightweight ammunition, ideally the whole section/squad should use the same calibre. Thats why the m60 was replaced with the 5.56 m249 but while the M249 can totally brass up an area effectivley it suffers at range, being only marginally better than the rifles it shares its ammo with and thats because its heavier and has a bipod to stabilise it at the 800metre mark. In the UK our assault rifles (even with 4x scopes as standard) had an effective range of about 600 metres individually and 800 as an 8 man section but the increased range was largely due to the heavier bipod fitted 'light support weapon' version.
TL:DR?. In essence range is only relevant if you *expect* to fight at those ranges.. if you're fighting in a jungle with visibility of less than 30 feet then a 2k max range is as much use as a chocolate fireguard ![]()
In battlefront, i just think they nailed star wars combat. Blaster fire isnt that long ranged and has a reasonable 'travel time', support weapons are totally lethal but rubbish if you outflank them or get close to the turrets. As with others i found actually going for the objective is the key and ignoring your kill/death ratio.
I'd frequently control uploads or pods because everyone else was running around just looking for things to shoot and then surprised when they were doing badly as a team ![]()