Also, forgot to add:
The basic funcitonality of my scripts are mostly covered in VBoxManage/VBoxHeadless commands. The extras I added are simple convenience and may not be written very effectively. I do like being able to execute a command to all (insert linux/UNIX flavor here) guests for keeping housekeeping duties easy.
The big one, though, is the script to start/stop all or one VM by name. This specifically can be used to start VM's automatically at boot and is helpful in case of unexpected outage on the host.