Another way to measure WSU's recruiting improvement
Unofficially, I found that the 2008-11 classes had a combined total of 39 Power Five offers, not including Washington State offers. For comparison, the Cougars' 2015 class, with 25 verbal commits not counting Kyrin Priester and Deion Singleton, has a total of 69 Power Five offers.
That's from Britton Ransford at WazzuWatch.com ($). Yep, you read that correctly. Just ... wow. There's a much deeper breakdown if you click on the link and have a Rivals subscription.