John is of course right. If you plan to use the RPi GPIO for other external devices, keep the pins. I bought a few very nice metal boxes out of Eastern Europe for the project. I only planned on running DMRGateway so I cut off the pins. I have one of the boxes in "production" and the second for development. The way we did DMRGateway allows for everything to run on one Pi or many. For example, you could have a RPI2 running DMRLink DMRGateway and AllStar. A second RPI1 running the AMBE Server. For that matter, consider the idea of a third RPi1 also running AMBE server for Fusion. You could run DMR and Fusion on a singe AllStar node at the same time.

NO, we have no plans for fusion at this time. Our hands are full with DMR and maybe a little D-Star. ;)