I grew up with Bugs and all his Looney friends. I even learned to sort of appreciate, if not really like, classical music through Bugs ('Kill the Wabbit, Kill the Wabbit!") I have Bugs Bunny and Wiley E. Coyote neckties (though I haven't worn a necktie in at least 12 years; my kids have borrowed them though!). All that said, I am not enamored with the new stamps - Bugs has been modernized to some extent that I don't get. That's ok though, Bugs went through many iterations whilst I was a kid, and perhaps these new iterations will resonate with today's kids.
I was disappointed in the editor's comment about why no 75th WWII anniversary. He quoted the guidelines like many do to justify their actions. I consider this not biting the hands that feeds you.
If they actually followed the guidelines, we would not have many stamps such as Harry Potter, endless superhero issues, and series like Celebrate the Century that broke all the anniversary rules. The guidelines are only used to justify why a stamp a stamp is not issued rather than why it is issued.