There's already an existing project that fulfills so many of those criteria that it's going to be very hard to organize a new one from scratch.
It's not hard as in "it can't be done" because it was done several times.
And the existing project already has a deep legacy of literature and culture.
For an interlingua candidate I see this more as a drawback.
That project is the world's second most widespread language: Spanish.
Yes, but the second most widespread language is still only about 6% of the population.
Spanish has been destroying the dreams of Esperantists and others over the years who hope to build a more regular, orderly, and easy to learn common language based on common Indo-European roots.
I don't want to start a flame, but by many standards Esperanto is much more simpler and logical e.g. if we take conjugation system, irregular verbs, etc. Esperanto is not unpopular because it's not simple enough. It is; Likewise Spanish is not widespread because it's easier (in quite a few aspects) than English. The widespread of Spanish and English is due to historical and political reasons, that's it.
Comments
It's not hard as in "it can't be done" because it was done several times.
For an interlingua candidate I see this more as a drawback.
Yes, but the second most widespread language is still only about 6% of the population.
I don't want to start a flame, but by many standards Esperanto is much more simpler and logical e.g. if we take conjugation system, irregular verbs, etc. Esperanto is not unpopular because it's not simple enough. It is; Likewise Spanish is not widespread because it's easier (in quite a few aspects) than English. The widespread of Spanish and English is due to historical and political reasons, that's it.