Unless you're Olive Films, Thunderbean will never have a bunch of licensed sets.
Why: For example, let's say that Fleischer Popeyes are owned by a huge monopoly called Warner Bros, ok? You can't just simply walk off with the distribution or sublicensing rights of a handful of important works Fleischer Popeyes from a major monopoly unless you have a powerful consultant with you, you gain corporate trust (like Olive Films), or come up with a quick load of lots of money. That could be millions, billions even to pay for the rights!
So to sum it all up: It's in the interest and money, and as far as I know, Thunderbean simply lacks those quantities.