Laying it out like this also allows you to see how the information groups itself, how best to section or chop it into discrete digestible units and where information should be repeated to maintain sense.
It also allows you to better apply your mission statement and objectives letting them work the ideas and information into the direction you intend to go.
This is also the best stage to bring in professional designers, now you have a grip of the content and a direction. Letting them see where you want to go lets them contribute their experience and skills to get you there.
Good design is like good programming - you get the message - you enjoy the software - the work and sweat gone into making it so is invisible. My motto is:
If a bit is not earning it's keep throw it out, make everything work hard for your mission.