I am recommending OSJ to the Dean here in Thailand at Roi Et Rajabhat University as software for our existing Graduate School Research journal. I am a Foreign Expert teaching here trying to move everyone toward Open Source and digital management. While I have served on many technology committees I am not the tech person.
Our journal abstracts are in English and Thai and articles are mostly in Thai. I just want to make sure that the Thai script will not be a problem in the journal articles and article titles.
Having the OSJ user interface in English is not a problem for editors or journal submission, and will encourage those who submit articles to learn more English.
And yes, I will encourage someone to start a translation into Thai. I am a native US English speaker so, not me.