The Associated Press reported Pope pondering change to Mass liturgy. Cardinal Francis Arinze said that Pope Benedict is considering changing the Sign of Peace to earlier in the Mass.
Shaking hands might seem like a more significant gesture if it wasn't with some of the same people whose hands one was just holding during the Lord's Prayer. See My Father? Our Father? and Our Father Who art holding hands
(via James Martin, S.J. at In All Things)