I think it doesn't matter too much. So if you don't feel good about what I would do or prefer, just do it the other way. Don't be confused, just do it the way you prefer. Don't make your life too difficultO my God, I make about 20 uploads like SmallBrother saz, and repeat, I don' t feel good about, but now I'm totally confused what to do. I hope administration will find soon acceptable solution.
At least for now, that "2CD" is the price to pay... I don't know how it's being generated - counted on the fly, or counted once and then stored in the database. But maybe your solution is possible.Maybe script opensubtitles.org use can recognize such 2 alphabet uploads and in this case replace 2CD with appropriate corresponding notification.
But anyway, whether "2CD" or even "1CD" shows, I would still add some text in "additional info", explaining what's going on. Something like (in Serbian):
"This download contains TWO files. The ONLY difference is the script used: Cyrillic or Latin. Further the files are exactly the same."