The reason for the ICAO airspace classifications was so that pilots flying or being trained in different countries would know what service they were likely to get in a particular type of airspace.
I doubt it. I suspect the main reason they were created was to allow countries to apply an appropriate level of ATS to any given traffic level.
I hardly think that
the reason for allocating and naming airspace was to help the foreign visitors or students. If it can be done, well and good but it wasn't
the reason.
Speaking of worldwide standardisation, when are we going to start driving on the right hand side of the road like the almighty Yanks do? or why have we had to endure seatbelts when they haven't? The answer's pretty simple really. Commonsense. Something we are not seeing in the VFR-in-E airspace discussion.