I have a large mimic that I'm working on in a coordinate container, and it has a lot of pipes on it. I needed a little more space to the left of my graphics to squeeze something in, so I selected all the objects and moved them 50px to the right. Unfortunately the pipes don't come with them, and I can't see a way to just shift all of their x position references by 50px - it looks like a very tedious exercise in expanding out each element and sub-element in the pipes properties, and manually adding 50 to each x value.
The most critical concern though about using the piping tool is performance. Once you start getting more pipes, performance and client loading times go up. If you take a look at Nader's example, it's unusable as an operator