Usualy you aren't more intelligent then the war ministry which ordered it. The old military stuff is just fine how it is.
You just need to learn how to tread and use it correctly.
I think you misunderstand how a Government Ministry works. The troups did not get the best; they got the budget divided by the number of soldiers that needed the kit. The squaddies often had to modify the kit to make it work for them; there was no 'one solution fits all' for any kit.
I worked in MOD R&D; we had to make compromises based on a load of factors - budget, weight, pack size for transport, durability, material availability, reliability - the list goes on and on.
And, I'm afraid, some of the decisions were made by people that had not common sense and even less 'dirt time'.