I am making some progress :)
You can follow it on romhacking discord. https://discord.com/channels/266412086291070988/1156659500430929930
In meantime, here's UI and Ace mission translation patch in Riivolution form :)
I have smashed this game open, and obtained unholly ability to not only fully translate it but even add subtitles to cutscenes through Dolphin.
All the nasty reverse-engineering part is pretty much done, but if someone could assist with actual translation it would go much better as my Japanese...