Nothing Wix does with their infrastructure will improve the performance of their "sites" when the default model is to load JS from one domain which then loads J

Nothing Wix does with their infrastructure will improve the performance of their "sites" when the default model is to load JS from one domain which then loads JS from another domain which then loads JS from another domain. It's at least 3 deep serial JS domain look-ups and tcp handshakes on all Wix "sites".