Request and suggestion:
Please tell us at 2-3 months before about licence expiry and your plans to renew it or not.
Post it on the drama's page for all to see, don't just tell the CM. So that other people may know if they want to watch this before it's gone. The moderators may be interested in saving their work, but regular viewers might have had this in their "to watch" list, and they also have the right to know.
Everyone is advising us ahead of time. Banks about our credit card dues, electricity bills: they say "you have until this date to pay up".
And I thought, after discovering viki, that I didn't need bother downloading dramas anymore, as they take precious hard drive space...