GUID's are based on the Origin account for newer EA games so use a different account than a banned one and problem solved.
So if you buy BF4 be sure to use a new Origin account just in case GUID's are the same because if they are your BF3 ban will carry over to BF4 through our Cross Game Hub option on PBBans streaming servers that use it.
http://www.pbbans.com/mbi-viewban-31abdf3c-vb316211.html