<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Ken hAAmer:
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It's based on the concept that money is more important to an airline than how much time you sit in their planes.
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Quite simply, you earn 2 miles/points for every dollar spent.
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There could be other bonuses as well.</font>
You are essentially describing VIA's preference program. Tier level strictly dependent on number of dollars spent. Top level has dollar and segment criteria.
Bells and whistles. Once you make a higher level you earn more points for redemption per dollar spent. Does not change the level qualifying criteria. Also extra points for things like booking online.
http://makeashorterlink.com/?U241113E6