@TTZ_Dipsy complaints are 1 of the reason why it was not implemented in BF1.
I was talking with DEVs in CTE when something like this was suggested it was even talked about being implemented in intrusion.
The idea was to create a defence system instead 0 to 100% health it was meant to be a direct comparison to ammo where bullets(pouch) to 100% and gadgets slower to restock from a crate(like BFV).
Here an example of BF1 where is was talked about Elite would have 200% armour and 100% health compared with 100/100 infantry. Instead we got elite with 200% health which is stronger than 200/100.
Yes, it would allow greater flexibility with the TTK/TTD.