However, consensus doesn't mean that they all have the same perspective and agree on the same plan. It certainly doesn't mean following what the majority says. Rather, consensus is when we know where we have each other, and we are working together on common projects. If I vacuum the carpet and you polish the windows, then we have some kind of consensus on cleaning the house. If we were trying to vote on what the right thing to do would be, we probably wouldn't get as much done as if we just go and do it.
Groups consist of individuals.
Individuals have different personalities, different perspectives, different abilities, different preferences. They naturally make different choices. Then you would just be impersonalizing and confusing things, making it less clear who actually does what. In the best working groups you will know exactly who does what, whether you are a member or a customer of some kind to the group. You will know that Sally is in charge of the paper supplies, and Joe is the guy who keeps the coffee machine working, and it was Jane who designed the new logo.