I'm not lobbying for hand-holding during the Lord's Prayer. I'm just saying one can make a case for it since, in Catholic theology, communion with God and communion with neighbor are intimately bound together. "Forgive us as we forgive" suggests as much to me. 

But, yes, I did think about hand-holding preempting the sign of peace, and there is something to be said for not overloading the liturgy with clunky, sentimental gestures. 

To cut to the chase, there are some hills worth dying on theologically. But this ain't one of them.