I have proposed a cross-cultural collaboration between Hong Kong, Singaporean, and Japanese communities to my Hong Kong community leaders. The idea is to host a one-off challenge where users from one community write about everything about the culture of another community. Like a Japanese user writes about HK food or a HK user writes about a trip to Tokyo.
I have proposed there will be upvotes for each contest entry and SBD prizes for winners. If this would be possible, it may increase user participation and bring communities in Asia closer.