I suppose if you were to have a set-up screen where you could aggregate them via GUI. The reason I think this is import is because is exchange/gateway A: has some sort of quantum resistant service and gateway b: has a shaky design with a vulnerability -- I want to be able to choose which gateway will receive x.asset. The BTS blockchain is not Atomic Swap and thus the central security of the gateway is imperative and thus the grouping is subject to massive implications.