I'm sorry to hear you are disappointed with the maps you've purchased. Much of the comments to this thread thus far are on the money as far as the considerations we take into account with the creation of our maps. These maps have always been this size and they are designed for use in handlebar bags. We do our best to keep the type size as large as possible. The "rule" is to never go smaller than a 6 pt type. Very occasionally we have to break that rule. I have heard of cyclists making enlarged copies of the narrative instructions to carry with them.
A GPS unit might be a good supplement for you. Be sure to take a look at the GPS Discussion if you have questions about good units to consider.
Good luck and happy planning,