Pioneers have had 42 sight since Relic themselves changed it as far back as in 2015 to promote combined arms play with their weapon teams. The Panzer Commander has also always given extra sight, it was just buffed a tiny bit (from 6 to 10 range) because no one ever used the upgrade. Self spotting has been gradually nerfed for most units over the last few years, most notably the Command Panther, snipers, Puma and AEC, Pathfinder and JLI weapon recrews, Pyro Sections, MG42 bunkers, Elefant with spotting scopes and spotting scopes themselves, the Tiger Ace and I guess you could count the sight bonus that Combined Arms used to give that was removed. Do I need to keep going?
From memories it wasn't anymore Relic who leads the balance when the bonus was added to pioneer.
Keep going and compare how many units each faction will field with superior vision. You reduced command panther vision but you're giving +10 to any other tank with an upgrade giving a true edge to those tanks over their opponents on the most populare doctrines. You've reduced spotting scope effect after how many request? 222 with scope is still there and I always see people upgrading scope on their tank when selecting the doctrine and as I said people abuse of smoke and vision strafe, and why wouldn't they?
Now compare to what USF get to extend their vision. M20, Pathfinder,M8, Major plane and since last patch major vet1. What's the most reliable way to get extended vision on the frontline, a major or a P4J?
If you believe Pathfinder is solely used because it synergize well with Scott, you're completely wrong. From what I've listed, Pathfinder remains the most durable unit to provide vision thanks to their camo. In a game where half of you're opponent's units can get vision bonus with a doctrine and your only option is a M20 or a Major already burdened with FRP, then you do the same, you pickup a doctrine giving half of your own units vision bonus too.
2vs2 OKW most selected commanders are
Breakthrough = vision bonus on mainline infantry
Elite armor = vision bonus on tanks
Overwatch = JLI
Grand offensive = extra vision on mainline infantry + smoke and vision strafe + extra vision on tanks
You act like the balance team removed bonus vision from what existed before but the only real removal was for the M42 bunker and JLI/path weapon crew. then more vision bonus were added to different units as upgrade.
As USF if you don't pick a doctrine with Pathfinder, on 2vs2, you're just fucked because not only you can't avoid your opponent defenses by lack of vision but also your opponent, he can predict you movement and get an edge on every fight because he has easier and better access to vision bonus through stock units and variety of abilities in various doctrines.