What did I do ? I opened the game (2.0.11 (build 79682 expansion, linux64)) and tried upgrading an old Factorio map. Mods when map was created: * base: 1.0.0 Mods when map was loaded: * base 2.0.11 * squeak-through-2 0.1.1 * elevated-rails 2.0.11 * even-distribution 2.0.2 * flib 0.15.0 * quality 2....

Hello,
I've created an account just to bump this topic.
It's a great suggestion, also it could be interesting to add an `on_alert` event to the API.