Alumni iDev beat Sage (well, they were hiding behind the Memory tag) while following the rules and not using our 2 banned players and we even subbed out Sarah in the finals because she was excessively lagging, so I think that's a pretty poor argument

It's not that hard to not get banned and it's not that hard to follow the rules
Evading ban is against the rules in the first place so it's pretty derpy to even suggest they should be allowed to participate in a GST