adding actors to dramas/movies

Please do a better job of adding the actors to their dramas and movies. They deserve to get the proper credit for the things they are in. Viki does not do a very good job of listing/linking them. Having all of the main casts should be the minimum. I’ve seen multiple dramas with people missing from the main casts and others labeled incorrectly. 

If whoever is in charge of adding casts is not going to do it properly and thoroughly, then they should consider letting users/volunteers add them like mydramalist does. They could let users/volunteers submit the edits, and then let an employee or head volunteer or somebody similar approve or deny the submissions.