I emphasize that this is not a suggestion, just a loose discussion.
What do you think about mixing all the battle categories into one? Of course not in the current conditions, the game design would require some changes. I think the current BR system has many flaws, the biggest of which in my opinion is the fact that a player who spends a lot of money on a premium squad gets a slap on the face and finds himself in a situation where he plays against much tougher opponents.
The main change would be the expansion of the war zone, light vehicles and light tanks would need more space to match the advantage of heavy tanks, which have a large firepower advantage. It would be equally important in relation to infantry, more space would theoretically increase the scale of ranged combat, which would reduce the advantage of automatic weapons. I am not an expert, but from what I heard is that even in reality during World War II, tanks of different weights and weapons were used in the same operations. It would then be even historically authentic. Unlike what we have and what the developers are striving for.
The second change would be the size of the objectives, although not necessarily the objectives themselves but the mechanics around them. I would use the great system from HLL here, where the goal of the game is to capture a stronghold, and the area around it is just a multiplier of the capture time, i.e. the more people around the stronghold, the faster its capture. This change would ensure that players with a lower battle rating would not have to necessarily rush towards the stronghold, but take up positions around it as well.
The third change would concern the effectiveness of the AI, bots armed with weapons effective at long range would be more effective at long range, and bots armed with SMGs would be better in CQB, etc.
In theory, this idea would help, if implemented correctly, to concentrate the entire player base into one matchmaking, create a truly multi-scale sandbox, create conditions for adding more major factions, and much, much more.
In addition, this idea is very optimistic in my head, considering the success of the big action mod by Tommy, but the biggest difference is the fact that in this mod the line up of squads is predetermined, thanks to which the fight is perfectly balanced. Although I think that with the power of the development team this idea could succeed even better.
Ultimately, this mode could be available as official custom games, an idea that actually appeared here on the forum anyway. It would be the perfect solution for creating and testing such niche concepts.
I encourage you to discuss in this topic, I am curious about your opinions.