Reducing or Limiting Board of Director Powers

Our HOA Bylaws and CC&Rs are very much the same as what was used by the Builder when the community was turned over to the membership. The Board and with the approval of membership have made some changes to those documents over the years. Many in our community of 2500 homeowners believe the current Board has been given or assumed too much power, do more, or become involved in more than what an HOA basically is expected to do and without majority of membership approval. Currently, we have nearly 25 Committees working on various projects, such as changing the name of the community, image, marketing, to membership health and fitness choices. While I know we can limit Board spending, can we also limit the number of committees that the Board creates, number of various meeting (even informal "Coffees" with the GM) and/or the general aggressiveness of the Board? For every meeting there are 1 to 6 Administration staffers in attendance at a cost to the membership. Some would like to see our governing documents provide our Board of Directors with just basic duties and powers, and provide limitations to what they can do without majority of membership approval. How can we start that process? Does anyone have an example of such?