I found the current preset system quite useless because it do not record equipment of soldiers in a squad, so still a lot of time is needed to switch a different squad line-up compare to War Thunder which can switch to a completely different prebuilt line-up in one click. Also, for players with limited resources, it is usually not possible to give same equipment to all soldiers in the same class.
I would expect a better preset system which record all active squads, all soldiers in each squad, all equipment (perks and uniform for the future change) of each soldier. So to switch to a different BR, one click is enough, and also because all squads, soldiers, and equipment are recorded, this system can carry out simultaneous removal and introduction of equipment or soldier without cause resource restricted problem (such as currently when you want to switch an equipment to another solider, you must remove it from previous soldier into reserve first, then equip it from reserve to the new solider, not the other way round or simultaneously).