JohnT I like your second post just after keeping the IP's if possible. If we do keep the IP's what is to come of the old box? do we actually own the boxes?
Also, what about some sort of free DNS forwarder. That way IP's become less important - and the next time we will not have this problem again. Instead of getting people to save 123.123.123.123:27015 in their favorites why not encourage them to save "kalt.edgegamers.us" in their favorites which automatically forwards them to the kalt servers IP (whether its 1.1.1.1 or 255.255.255.254 and changes 6 times per day, it always pointing to our box)