Don't know where to put this exactly, but a search feature:

So what if there was a search bar within the same place where you see and add friends that let's you search for discords? Yes, I know there are websites for that, but I feel like it'd be a ton better if you could search for discords within categories or just using text and then you could simply hit "Join", and you'd be in! 

The thing is, there are issues that come with this, for example joining discords that you shouldn't have access to, the fix is quite easy though. Within server settings that every server has, you could have an option to set the discord server as a private server, or public, obviously public allowing it to be searched, whilst private requiring a specific link.

It could really help show others more servers whilst also helping servers gain popularity and members, in my opinion, it could be extremely useful for pretty much everything.

I put this within the Other topic but if someone could tell me where this goes exactly, let me know and I'll repost it there.