Guys,

Please be very careful when you bring in foreign biological materials (be it microbe, animals, or plants); unless you have an enclosed environment or proper safeguard systems where the chances of escape are almost negligeable(eg. a way of containing the queen and any future queens from escaping or "swarming"), please do not bring in anymore foreign species.

In addition, please make sure whoever you get your bees from are qualified and certified (properly), as you wouldn't want to bring in the disease that is killing off the European and American bees into Malaysia.
This may be my own perspective, but I believe that instead of trading the local type of cultivar for a foreign one, a smart farmer either works with, or around the local cultivar, to maximize its potential. My thoughts are that local cultivars (be them plants, animals, of microbes) have been developing in the local environment for a long enough period to become well adapted to the area, including tolerance to weather fluctuations, diseases, predation etc. By working with (eg. selective breeding, proper animal husbandry etc.) and working around (eg. influencing the environment parameters, nutritive content, growth factors etc.), a more desirable result will be obtained in the long run.

Just because a foreign breed has been noted to have higher yields,  faster growth or better temperament elsewhere, that doesn't mean it will suits every locality or country. On the contrary, it might now perform well enough, leading to economic losses; or it might perform too well, and lead to excess and wastage, again causing economic losses. Personally, I'm not sure if the short tem gains are worth the long term losses.