[Fyron]

I think spaces at the end would show up, so you would want enough spaces to go past the 3rd line of display for the traits (which is only half a line, but you can still figure out what the traits are from the top halves of the names) for EVERY trait, then a random character after those spaces, as it will never be shown in-game.

The problem is that when you meet a race, most of their traits would be painfully obvious. How do you hide the fact that you use organic stuff on your ships? Or crystalline? Or the fact that you are deeply religious (your entire demeanor would give it away)? Some traits could be hidden, but most would be obvious, especially if you ever get to scan or visit a planet of theirs...