I fully agree with this.

I was doing the latest patch content and I quickly figured out the mechanics for the boss. I play on JP server so I tried a few times to communicate the need to do certain things.... before I realized that the ENGLISH NAME WAS TOTALLY DIFFERENT FROM THE JAPANESE NAME which explained why they were all clueless.

Maybe, at the least, when we're in a raid/trial, there could just be an additional auto-translate category to access that is just for the important things of the encounter. It's pretty annoying when there are so many unexpected differences between the names of different languages.