I think the Bible clearly teaches a plurality of elders. I also think the Bible sort-of-clearly teaches that the elders are in some sort of leadership (and definitly teaching), so I take the position that leadership should be a plurality of elders.
However I generally focus their leadership more on the spirtual health and guidence of the people and not so much on decisions for where money should go, buildings, which hymnal, how many services etc. By default they will also lead those decisions but there may be people in the church with the "gift of administration" who are better suited. The point is, that those things arn't the point. The elders should be focus and striving for every spiritual step of everyone in their care.
Personally, I think of pluraility of leadership is healthy for any body, espeically a church. That doesn't mean that one guy doesn't take more initiative in finnally decisions or isn't looked up to more or respected for wise counsil and therefor agreed apon more, it just means that many men get together and pray and exhort and encourage and decide with many voices what is best for their flock.