Hi stefano, there is currently an Align command under the Transform tools that is similar to what you're describing.

You can use that to make a set of objects be aligned by their centers, the only part that is different from what you are asking for is that you choose a target point instead of a target object.

So say you want to align 3 boxes vertically. Select the 3 boxes and run Transform > Align, then set the "Vert center" option and then pick the target point like this:



- Michael