Seems like every other crafting profession with a weekly quest gets 2-3 knowledge from it, but engies only get one?
In DF, they did similar because engineering has so many “first craft” KP points. I don’t know if that is still the case in TWW, but might be worth looking at.
Engineering gets less points per week then other crafting professions because it has significantly less knowledge points in total.
To finish the engineering skill trees takes 500 knowledge points.
To finish the blacksmithing skill trees takes 865 knowledge points.
Thats a huge difference. It still gets the same amount for books and treasures - but then less per week. It is still the case that engineering can probably be specced completely before other crafting professions.
I have spent 255 kps in engineering so far so just over 50%.
I have spent 291 points in blacksmithing which is only about 33%.