Well, the new LC tax forms are out, and Lending Club has added a fun surprise, cost basis is now reported to the IRS, using a method that is in line with LC's traditional high standards for accuracy and reporting. Also, cost basis has been reported for each individual Folio note transaction, so we can have more fun.
To be fair, it's only like 5 dollars off from my method, but good luck ever trying to figure that out, and it looks like some of the more optimistic methods of calculating cost basis for LC notes are about to be rendered obsolete.