The best way to convert NGN-USD is still the p2p method because it is not restricted and let's not also forget that CBN hasn't given bank access to start using crypto,so I think that it will be difficult for Kucoin to achieve their goal on easy buying of USD directly from your bank account. If this becomes possible with Kucoin,then I think that the hope of using crypto with a third party will be recognized and adopted by other exchanges.