I'm not sure what MUD you're referencing, but your implication that there's some analog between giving better customer service to people who pay more and segregationist policies is more than a little bit over the top.
Is it 'bad' when Disneyland sells less waiting in lines to people? Is it 'bad' when companies sell you different levels of customer service plans, such as Dell (along with many, many companies) do?
--matt
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