You’re grossly overstating how much the list matched the final 2008 cabinet.
There are suggestions for 31 positions and 69 names, with some names put forward for different positions. Of these 69 names, 17 make it into the 2008 cabinet and 14 of those into one of their suggested positions. However, there are also 13 members of the final cabinet who aren’t even on the list. (I couldn’t figure out what “Energy Council” refers to, so the math doesn’t add up completely.)
I’m not disputing your claim that Obama was too soft on Wall Street. However, your insinuation that Obama’s cabinet was dictated by Citigroup is not borne out by the email. Froman, the author of the list, knew Obama from his time at Harvard, so it’s not a total surprise that he became an advisor on Obama’s transition team.