There needs to be an international version of English designed so that it is simple to learn. For instance: one sound = one letter and all verbs conjugate the same.
Esperanto is an attempt at a equal international language for all. http://en.wikipedia.org/wiki/Esperanto
Because English and English speakers are happy to adapt and change, the simplification is happening. Look at text messaging where superfluous extra words and letters get dropped, as does case. Even Hollywood is careful to keep language simple in their popular movies aimed at a worldwide audience.
An alternative, phonemic alphabet for foreigners might have more hope, though even then the use case is narrow.