LUA Startup Message
Some, perhaps many of the LUA Plugin authors include a line in their code that is executed on load of the plugin that displays in the in-game chat window some sort of line that says what plugin was loaded. Some even include a version number in this text chat.
While I know that some, perhaps most of the LUA Plugin developers, know how useful it is to have this, I'll say it for anyone else who might be less knowledgeable. The start up message is crucial when testing load order issues, including the use of Plugin Managers that don't support load order control.