Firstly, if the government simply mandated that a college degree and a TEFL certificate were the basic qualifications to teach in Thailand, this would rid them of most of the Western men here who aren't qualified to teach. Secondly, if they increased teacher salaries for both Thais and Westerners, they would get better qualified teachers.
As it stands right now, Thai schools pay the exact same low wages they did when I came here five years ago.
Yet prices in the last five years have gone up more than 20%. Thirdly, if the government made getting a work permit easy for qualified individuals, instead of the mess it is now, teachers would come here and would stay.