Looking forward to seeing it in Edinburgh! I second the cable-tie around the link, my link housing is a couple of cable ties so it makes it easy to find the link when it disappears inside the robot.

Off the top of my head, when you're in the pits you might need some sort of locking bar for the weapon to make sure that it physically can't move, and you should also have a cradle so that the wheels of the bot are off the ground.

My cradle isn't too fancy, just a couple of bits of wood screwed together. However I did hear there might be an award for best cradle at this event