Often by the time you fill up your block list, older blocked users have stopped chatting in game wide chats, and can be removed.
Line app and Discord app
If you find this insufficient for your needs, you should probably avoid those game wide chats and instead join a Line app, or Discord app, group that focuses on your Empires interests.
Sample forum posts
Development cycles
SGG is unlikely to spend development cycles further improving game wide chat.
Both Line app / Discord app are build around chatting so monthly development cycles are already budgeted for improving items like block lists and frequent recruitment advertising.
