Suggestions that require complete redesign of the entire user interface will be taken into account for the next iteration of the device. 
There are some technical reasons, mostly involving fitting as much as possible into the memory space available, why the pipes are placed into a fixed grid.
That said, we haven’t exhausted all the Midihub’s capabilities just yet, at some point we’ll get to introducing some new features to the Editor that will add a little more flexibility and possibilities.
It’s taking a while - we are a small team, with multiple projects on our hands, and many business areas to take care of.