I'm often disappointed when I see that I don't get a book after completing a Library Quest. Maybe the library quest could be changed up so it runs similar to how Quentin's quests are?

Like so it gives out a book every time? That would probably just deflate common restockable books to the point where they're pretty much worthless, and then library quests wouldn't be worth doing.

Alexander already gives out several quest-exclusive books, and they're pretty cheap considering that's the only place to get them.

the point of his quests is for you to give him books so that his library gets bigger, why would he give books back?

I actually really enjoy how the library rewards are set up at the moment. I'd actually rather not see him give out just books.

Yeah, I love the Library Quests as is, he's the only quest who gives out rares reliably.

He'll have more books released in his Quest Shop, I'm sure.