The problem with pre-WW2 militaries is that except Germany nobody really knew what to do with tanks so nobody really knew how to design.
Sorry don't agree, though I'm working for the moment on memory. The ideas of Fuller, were tested in army manoeuvres on Salisbury Plain in the mid-thirties. A Brigade (as I recall) of tanks, together with lorryed infantry were pitted against a 'conventional army' enemy. They speed and directional surprise won the day.
And what of their commanders - Pile in charge of Anti-aircraft artillery, Hobart - after training the 7th armoured - retired. Martel - at least did get some 'action'.
In theory, the consequences of such a result should have been a higher mechanisation of the Army; but that wasn't really on the agenda - only the result was up for grabs the consequences were not!
It was just too revolutionairy - the Army wanted to maintain the status quo.