AbdulAlhazred
Legend
My biggest beef with rituals is not gold, but casting time. It's just too damn long in most cases, without any way to reduce it within the rules.
The idea was to encourage PCs to solve problems by mundane means rather than rituals.
However, that's counterproductive. It forces the other PCs to idle around in-game and do nothing while the Wizard casts. That's not fun. Just let the guy in robes mumble a few words and the game can continue.
What does anyone care if the characters "stand around" for 5 minutes? Or 24 hours for that matter? Its not like the PLAYERS are standing around doing nothing. It just gives the DM the justification to say "nah, you don't have time to do that" if he wants, otherwise the casting time is essentially meaningless. It is a plot device, nothing else.
As far as combining rituals into a single book, just allow it. I mean the justification can easily be "you unbind the 4 books and bind the pages with stuff on them into one book." Charge them 5gp for materials if you want, or make them spend 5 gp to have some guy that knows how to bind books do it.
Components coming from monsters or being gathered should be no problem either. The DM allows the wizard a skill challenge to acquire some components. Its an encounter, it can have a treasure parcel, the treasure parcel can be components and they can be fluffed as gathered or harvested or whatever you feel like. None of this even requires a house rule.