Bitcoin as it is works fine and it can scale globally as it is, the proper way to see things is to think that bitcoin simulates gold with the added property of being portable. you would not buy a soft drink using gold or a $100 dollar bill, for that reason alt coins like litecoin o dash have a purpose, we do not need 500 alt coins, but maybe a few are needed.
Bitcoin whitepaper describes it as "A Peer-to-Peer Electronic Cash System" right in it's headline and "an electronic payment system based on cryptographic proof". Wouldn't redefining it as e-gold be breaking the social contract and alienate lot of users? Only time gold is mentioned in the whitepaper is to explain mining, not usage.
When you reduce the use cases for Bitcoin you also reduce its demand. With the reduced demand its valuation will decrease, unless you get enough new e-gold bugs to join to compensate for disappearing sectors of bitcoin economy.
As bitcoin is obviously intended to work as payment system. Wouldn't it be better to create an alternate coin with a whitepaper that tells its users that it's main purpose is to work as e-gold? No one would feel cheated and everyone would be happy.