Something I noticed
A lot of the droids in Star Wars are designated by a 4 letter code, all of which are capitalized. Now forgive me if I'm wrong, but there aren't all that many (relative to a galaxy) possible combinations of them...given that there's an entire galaxy's worth of droids that you see all of the time in various planets over many thousands of years, wouldn't they have run out of possible combinations a very, very long time ago?
A bit random, just wondering.