Character names at the start of a message.

[Strichev]

Wait, isn't that the standard for capital ship RP? You can even RP a mutiny, a corrupt captain hiding his dealings with pirates from the crew and so on. It's not that hard to type it, really.

You also don't need to type it every single time; if you have a continuity of time, space, characters (also, people involved) everyone will know that it's the same character speaking. You then only type the name when someone new appears (be it a player or another char of yours speaking).