Copy Process Model Elements Between Windows

I believe this feature would provide significant efficiency when process modelling. There may be entire lanes or pools that could be copied from one process model to another or even just a sequence of tasks, gateways and events that could be copied from an existing process model to one being created. I have done this quite often when using Visio and it did save me significant time in doing so, mainly because the symbols were 'mature' and had all been labelled with text. This text didn't need to be re-entered, thereby saving a lot of time that could then be redirected to other parts of the process that needed to be modelled. The net result was the ability to complete a process model more quickly and then submitted to stakeholders for review.