There's a ton of categories, and in some cases the categories overlap to an exceptional degree (for instance, there's a category for "Netorare" and one for "NTR" ) or are rather unclear (like "netorase", I have no clue what that means). Seems like it might be beneficial to include descriptions of just what a particular category means, particularly for categories with foreign or Japanese names.

I appreciate the suggestion! We're working to get ourselves in a state where we can actually implement them. Please continue to suggest additional features as you think of them.

How about dividing categories into verified (with definitions) and unverified (all other)?

And maybe somewhere in future give verified alternate names?
Because currently some has "One/Two/Three" synonyms as name (those with two are most common and there are really many to prevent duplicates like yellow and gold), and this words will be included in search options because currently you need to know which synonym is first to find this tag.