I'm aware of the advanced search parameters, it's useful to search within a range but should be unnecessary if you are just searching the title + its release year. Common titles will have a handful of releases, why do I need to go to advance search to search "love 2016". I search tens of titles every day, It's a bout practical user experience saving you two clicks :)
For my third point, as I mentioned there are, on MDL, unregistered alt titles for obscure/unpopular/indie entries. Of course, for your your top 300 drama/movie/entry you have every possible combination of alt titles available on the internet while the rest of the database have the native title + English title (sometime it is translanted from the native one, sometime it is the official global one).
In many cases for these titles I go to IMDB scroll down to details then click "Also known as" and try to fetch something and past it in MDL. Of course in such cases I end up adding them to MDL manually.