I think you can have the serious Buzz or source material Buzz, but it had to be first, not the other way around. We love toy Buzz. We want toy Buzz. We want Buzz and Woody together. I don’t think we’re interested in source material Buzz now that we’ve had Toy Buzz. Besides, did Lightyear even match the tone of what we imagine the source material to be like to create a toy like Buzz?

Seems like a Star Wars problem, where you let the IP live in our heads too long, then add to it. You are going to have to be perfect to make most of the fans happy, and even then, not everyone will be happy. You can gauge how old a person is by how offended they are by each trilogy.