It would look better and take up less characters when writing things out. Instead of typing "Only 25000 credits", a player could type "Only $25000" and the game would simply have the Galactic Credit symbol in place of the dollar sign or whatever the player has locally.
Immersion and laziness in equal parts.
A quick and simple change to the font should be all that is required.
I know this is not a big thing, but I've had this idea bouncing around in my head for a while. Would it a bad or difficult idea to replace the common currency characters(dollars, pounds, euros, et cetera) in the in game's font with the Star Wars Credit currency symbol?