With the growing number of reviewers on this website, I think it would be great if we had more filters in the review section - it would make navigating through them easier (especially for the more popular titles where 300+ reviews is a normal thing). Some examples in addition to "most upvoted" and "newest"
- Recently active - when a review gained a certain number of upvotes in a recent time period
- Filter by friends/people we follow - sometimes when I want to check reviews of the drama from my friend, it's ridiculously hard to go through all the reviews to find the few I am interested in
- Order by rating - lowest/highest (or picking which rating reviews we want to see, for example only reviews with rating 7)
- Search bar for user might be a good idea, where we can just type if user's display name to find their review.
Also, moving Filter by Status to separate button, since most people don't even know it exists under "All languages".

Additional note not related to filters - with how abused "unhelpful" button is, I think it would be good to just completely remove it. It's ridiculous to see reviews with close to 50-100 upvotes being dropped down the review section and be under some that have just 9-10 upvotes, simply because people downvote the reviews no based on them being "unhelpful" but disagreeing with the opinion of the reviewer.
Not clicking "helpful" means the review was not helpful, we don't really need additional button for that.