The fact that this suggestion is the top voted suggestion by such a large margin makes me wonder. How long has it been since a significant update to the site? Did I read somewhere that Philippines were added last? How long ago was that? 1 year? 2? more?
Is there any place where the site devs list updates to the site and anything being worked on? Or is that entirely unshared with users of the site?
And I'm also curious, how many people keep this site running. Is it only those listed in the staff section? And are they volunteers? Because that makes a difference when it comes to making significant changes like this.
But I feel like the update could be very simple. Merely allow users to manually add titles and actors with the country Vietnam as an option. And add it as a filter for the search function. I don't know programming at all but that seems like a simple change that could be made to allow the users to build the database. Unless the bigger concern is having staff able to review submissions to check for legitimacy of submissions?
(Sorry for the long post,) this is my last point, as a side note. Weeks ago I submitted a streaming service to request it be added as an option under "services," and it has not been added. It's also a more well known service (gagaoolala) that I think many other people have submitted the request both before and after me. The fact that something smaller like that has not been affected makes me wonder if the site is kind of just running "as is" and anything not 100% generated by the users has not been updated in a while.