Taking your questions in some order of ‘priority’:-
It would (should) be
(1) at first a Supplement to the de-facto World-English language, growing to
(2) ASAP replace World-English; and be
(3) Made up of keywords, phrases and terminology drawn from every currently in-use language in the world –
(4) compiled to represent foremostly every Life-Need (of all of this Earth’s biomes)
and therein every human-need –
[* for “best” – meeting our Needs :- many people would probably prefer the more essentially strategic term “sustain-worthily”-meeting…]..
a much more efficient world-language than either English or Esperanto;
“A Composite World Language” ?
thereby also seeing what any other participant(s) might have to say;
and half of the words are not known in any earth spoken language…
Do you make them up ????”.