i would say that the first step to any campaign is for the
lea-duhs to lead by example..
the lea-duhs go with the "courtesy campaign" yet they behave like a
bunch of disgraceful spoilt brats.. what credibility is
there?
speak whatever language.. just speak it well 
btw, remember the "mandarin campaign" thing? after many years,
everyone except for a few, speak mediocre mandarin, while almost a
whole generation is unable to string together 2 sentences without
making about a dozen horrific basic grammatical errors...
so, maybe let's go to singlish 