Michael wrote:

First off, we've already done it with Class F airspace - we don't have
any in the US. We don't have to have class D either.

This has nothing to do with ICAO compliance. Each ICAO member is free
whether or not it wants to use a certain airspace class. The country
where I live, for example, does not use airspace class A, B and F. We
only have C, D, E and G. Nothing wrong with this.

Third, I don't see what the big deal is about local regulation. Yes,
it makes things more complicated for the huge international operator,

And for the average private pilot who wants to cross a border now and
then. Maybe not an issue when you live in the middle of the USA without
any intention of ever leaving it, but I live at 1nm from a border and
3nm from another border. Oh, and when I fly 150nm, then I can choose
between two more borders...

Intuition is a very personal thing. What may be intuitive to you may
not be so to me and vice versa.

Actually, that's not true. There is a whole science of ergonomics,
....
If people keep right-clicking somewhere where such an action has

:-)

If 20 years ago, somebody told about right-clicking, what did you
*intuitively* expect??

Intuition is just another word for experience.

Stefan