First off, Lingua-U is not a language, it’s a metalanguage. No one is going to SPEAK in Lingua-U. (There’s Jai’ai for that.)
Lingua-U is a METHODOLOGY for understanding the sacred significance of human utterance in comparative perspective. Through its use, one can become more proficient in speaking about spiritual and philosophical matters in ANY religion.
The goal of this new metalanguage is not to build an army of new language speakers; it is to push the edge of human linguistic evolution in a manner that brings all that is truly sacred closer together in harmony.
If people choose to adopt Jai’ai because they like it, they’re the “power users” or “early adopters” of new linguistic technology. Hey, Jai’ai gives us 243 new articles, word affixes, and pronouns that we can “mix and match” with any other language we choose — what’s not to love about that! You can toss Jai’ai into English or Spanish or Chinese like croutons on a salad. Or build a whole salad out of Jai’ai greens, your choice.