It's interesting to think of the benefits a modern constructed language and script could bring, but a way to foster adoption would be a very difficult task. Esperanto has a lot of speakers world wide, but hardly in significant proportions.
Another interesting case is the Cherokee syllabary:
> Once Albert Gallatin saw a copy of Sequoyah's syllabary, he found the syllabary superior to the English alphabet. Even though the Cherokee student must learn 85 characters instead of 26, he can read immediately. The student could accomplish in a few weeks what students of English writing could learn in two years.
Another interesting case is the Cherokee syllabary:
> Once Albert Gallatin saw a copy of Sequoyah's syllabary, he found the syllabary superior to the English alphabet. Even though the Cherokee student must learn 85 characters instead of 26, he can read immediately. The student could accomplish in a few weeks what students of English writing could learn in two years.
http://en.wikipedia.org/wiki/Sequoyah