As far as changing the system, I have two thoughts:
1) There is no reason why anyone must have the manuscript recipe to play/succeed. You have a book binder. It can get the job done. If you want to invest in buffs for it you can speed things up. And in the book binder it costs less.
but
2) Other recipes for the provision houses were available guaranteed for a fixed price. It seems interesting to me that the book recipes are random, therefore slightly inconsistent. If it was up to me, I would make each chance cumulative so that you were guaranteed to get it eventually - perhaps something like 2% 1st time, 4% 2nd time, 6% 3rd time, etc. up to 100% - or whatever increment would make the most sense to the devlopers.
I'm in the situation of not having it (yet) while my wife already got it, so it's especially annoying to me for that reason alone. But I can't forget point 1 above. Not having the recipe doesn't mean I can't make books, so I just have to do the best I can. (I have an Epic Farm and she doesn't so I can tease her about that)