From the OP:
Important Notes from the Translator:
There are 2 major problems with going further: first is that main menu items are images with custom meshes so you need Unity to recreate them and manual asset dump editing to insert them (only replacing Texture2D images will have parts of them blocked by old meshes) and the second problem is that most of in-game texts are inside MonoBehaviours and need to be extracted and repacked using binary parsing. And there are literally hundreds of them all over various assets which complicates things with manual extracting in UABE while extracting with the other tool just gives incompatible filenames.