adrien:
I know the service has been mentioned before and nothing's come of it, so it must present an issue(?), but I thought it worth mentioning that Vimeo is the only [official] platform I Told Sunset About You is available on with English & Chinese subtitles.
If the issue is whether to make it one service or each "person" on it a service, I think it's best served by something in between. Most of what's on Vimeo is uploaded by its own production company, if not the director themselves, so such accounts and those for single dramas could all come under an "Official Vimeo" service, as there's relatively little in the way of piracy to avoid on there, unlike YouTube (where each channel needs checking for legality).
But there are a few cases of more than one official upload of the same title, such as by different distributors with rights for different countries, so distributor's accounts like those of Third Window Films, Rapid Eye Movies and Peccadillo Pictures (which has some shorts from covered countries) and those of a "discovery platform" like FilmDoo or NOWNESS (which have their own sites, but as they doesn't have their own apps, the Vimeo accounts make watching on a TV easier) would be best served by being separate services. These companies might be executive production companies that fund some of what's on their accounts, but they carry content from many different production companies (those that actually make the dramas).
The same goes for Naver TV, especially as that very often has separate accounts for each drama/variety show.
EDIT: I just discovered that Vimeo was one of only two platforms (the other being YouTube) that was mentioned in the original suggestion for this feature, which makes it particularly incongruous that it isn't option while many others are (though I can understand that adding it isn't as simple as for ones on which the content isn't user-uploaded).