PLEASE PLEASE PLEASE put the single time "repeatable researches" (Corpus Fabrica, Dwarven Dirges etc.....) in a seperate catagory, as if you have enough resources for a second book, the game will burn those resources once the book is finished. Im sick of losing uncountable codices and many precious tomes.
You have a solid base of a game. Knowing how much health your enemy has would be nice. Being able to change the bows tragector, basic improvements. Obviously something to spend them crystals on but i assume you already had something in mind. 4/5