But Esperanto isn't a neutral language - it's very very strongly romance-language biased, and as it was created before language study was much of a science, it isn't even as regular as it could be. It's not a natural language but it doesn't have any of the benefits of non-natural languages...

Don't get me started on the fact that it doesn't protect minority languages, as there's no model of sociolinguistics that would indicate any benefits to those languages with fewer native speakers.

Does that Secularism analogy still work? :-)