The employment situation will never improve because the entire profession is based on the flaws of the language.

Its a matter of efficiency.

People have limited resources of money, time and enthusiasm to devote to learning any particular subject. If English had a spelling system, simpler grammer and a well organized vocabulary, the amount of time needed to learn it would be greatly reduced and therefore a better investment of these resources.
The value of services provided by each teacher woud therefor be much greater.

If it took you only a year to get a class from 0 to 100% fluency, the schools woud be able to process more students and more students woud be able to afford to attend. The excellent results woud encourage even more students plunk down the cash. When a school has more money, they might possibly pay the teachers more.

English is riding the coat tails of our technological, cultural and military dominance. Its taking over the world. If it wasnt for the fact that one must learn the language in order to effectively access the bounty of culture and technology presented in English, NOBODY would bother.

BUT!

If Nooalf spelling supplanted the present tangled kaos and the vocabulary and grammer were simplified,
Less teachers woud be needed to do the same amount of work. Video and interactive computer tutorials woud be more effective and affordable option. So there woud be far less jobs available, but each teacher woud get more money.