Eww. So now the entire system depends on database matches back at home to work at all (since positions are relative, not absolute) and you have to test and engi

Eww. So now the entire system depends on database matches back at home to work at all (since positions are relative, not absolute) and you have to test and engineer it significantly more to look for possible problems caused by hacking it this way. Just eww. That's a terrible idea. Just spend the extra bits and save the headache of over-engineering it and then trying to fix all the problems you'll inherently create.