Just a quick Idea, i was thinking about EUDs, and wouldn't it be possible to read like.. Player 1's name, and then use it in a text message in game to make it seem like he is saying something???
Might be good for a comedic part of a map or something... or maybe to create difficulty in an Impossible???

You'd run out of strings.

So you cant like... convert it into a variable somehow? Like the character value into custom scores, kills, resources and what not??
Use that to type it in kinda thing?????

If you can find a way to add two strings together, that'd be awesome, but it's not possible. Try this trigger, and you might see the problem...

Conditions:
Always
Actions:
Display text "A"
Display text "P"
Display text "P"
Display text "L"
Display text "E"
Preserve Trigger

That pretty much sums up why a variable system won't work, unless there is a way to get the letters to print on the same line...