how did you lost? Go to Eternum-0.7.5\games\saves and check if there are save files. Or if you really lost your saves, use skip feature to recover the progress. Skipping unseen text and after choices setting in preferences will help you.
I am making Japanese translation patch so maybe I can help you. Also there is the discord server for eternum translator.
To translate Eternum, which is powered by Renpy, you can use Renpy sdk to make a template of translation patch. You can translate the game with editing that, but please note, translating tremendous amount of line is almost torture. If you want to know more, i can tell you.
You can make the translation patch for your language, but it would be pure torture fr. Then you have another option to use any of auto translators for renpy. They will help you.
I really agree with your opinion but I think it might be hard to improve the quality because all scene were made by a game called Honey Select, not any of 3D CG programs. Render quality would be capped by the game’s limitation.
