> I doubt that English is a good basis for a universal anything, due to the extreme inconsistency of spelling and pronunciation. There are some other disadvantages, as there are in any language, but having to learn how a word is spelled and pronounced entirely independently of each other, with no correlation, is a big drain on time. I imagine something like Esperanto would be much more suitable for the role.

Isn't that the same for many things [how something is vs learning something about it that isn't how it is]? Roman numerals still catch me out; I cannot work out some programming code; a highlighted corner in a spreadsheet hides a comment; I can speak German phonetically (easy pronunciation rules - wysiwys) without understanding a word understanding a word.