That doesn't mean users wanted something else; I used it originally because it was a "localized 4chan". When they started adding usernames and whatnot, I uninstalled.

That was the thing users wanted, take it away and why use the app? There are hundreds of social communities I can join, so what is YikYak's MVP? From that perspective, you have to choose what battle you want to fight - maintain anonymity and deal with the ramifications or lose your userbase by becoming just another social app?

Actual legal cases? Or just online petitions mumble jumble?

I don't think that's true, could you provide a source?

I don't know about legal challenges, but they basically created an anonymous area broadcast. There's a lot of complications that come along with that.

I really don't think there are. As long as they complied with authorities when somebody used Yik-Yak to do something illegal they're in the clear.