This was posted over in the bug report section, but I wanted to also bring it up over here too: https://forum.pso2.com/topic/12212/missing-audio-for-trial-pse-announcements-english-audio-only
Right now we don't seem to have any announcer for trials and PSE bursts, when the announcer voice in the Japanese voice setting would work perfectly fine.
If this was a decision made by some higher-up cringing at the idea of somebody announcing this stuff, I'd say they can stuff it and at least give us the option to turn the announcer on or off if they feel that strongly about it.
I could even go as far as to say this could even be made into a category of cosmetic item: announcer voice packs, but once you all release the Takenobu Mitsuyoshi announcer pack I wouldn't need to get any anymore. Though I suppose that could put the developers in a position where they are forced to work with a static set of announcer lines to use for future content, without needing to get in all of the announcers to record a new line if they want to add something that needs a new announcer line.