A straightforward way to move a lawsuit like this forward might be to sue to have apps similar to Tumblr taken down. Make Apple choose to either take down all

A straightforward way to move a lawsuit like this forward might be to sue to have apps similar to Tumblr taken down. Make Apple choose to either take down all of the apps or pay some large penalty based on damages that are easy to show - find the offending content in each app and cite the law(s) that were broken. Basically prove to Apple that they risk the viability of their app store when they censor specific apps. With the full legal power of Apple at their own disposal, they might just find a clever way to keep this situation from ever happening again.