I find data analytics really interesting. I worked for a while with *insert major company* who analysed data from other companies to help them choose locations for stores/ATMs, to keep customers longer, to identify customers who would possibly leave, etc. I think as long as it's anonymous (as in, no human can directly access *your* information), it works for us too. I'd rather get offers for things I want to buy instead of 6 packs of beer, meat and spicy sauces. If a company can tell I'm looking to leave, it gives them a chance to buy me back, which is good for me, but with no pressure because I was planning to leave anyway.
I do think in terms of EDR you have some good points, though, especially about mixing around the cards; it enables you to play them while they're playing you, in a way.