Stamps based on famous comics and cartoon characters

The US Postal Service has an article about some special commemorative stamps they've developed, based on at least a few comics and cartoon characters in recent times, which includes the following:

• 1997’s Bugs Bunny featuring the animated rabbit leaning on a mailbox with a carrot in hand;
• 2006’s DC Comics Super Heroes, featuring portraits of Batman, Wonder Woman, the Flash, Green Lantern, Hawkman, Green Arrow, Aquaman, Supergirl and Plastic Man in a 20-design pane;
• 2015’s Batman, featuring four versions of Batman drawn from different comic book eras, paired with four “bat-signals” that trace the evolution of his character; and
• 2016’s Wonder Woman, featuring four portraits of the Amazon princess from different comic book eras, emphasizing both her physical power and her sense of purpose.

Well at least this kind of venture is more appealing at this point than the artistic fiasco DC degenerated into by that time. But for all we know, even this could end up being craved by the speculator market, and that wouldn't be any better than how pamphlets are repeatedly bought by such decidedly misguided and embarrassing people for the sake of money, and in hopes the newer ones will actually make the same, which first brought down industry in the mid-90s.

Putting comics and cartoon characters on stamps can be creative, and might be preferable to some other forms of merchandise, but even that's no substitute for artistic quality in terms of storytelling.