You know what I would like to see. Just a dual core K version of Ivy Bridge, fabricated with real solder, sold just for the purpose of overclocking
You are right of course it would be a popular chip, but Intel are very unlikely to do such a move. They are boxing buyers in at the low end (regarding overclocking) and only letting you have fun if you spend more on the processors. It's a move which I think reduces the appeal of the i3 range. Even with a bit of a boost with IB it's not likely to bring very much over the current models.
Intel never really were a big player in the bang per buck overclockers market, in 2012 the same situation.