These are interesting questions. The parity in the NFL now is great, and it certainly seems like ratings and attendance are better than ever before. But yeah, it does seem like the richer, more 'valuable' teams should get some sort of an advantage. I guess they do get more exposure at certain locations, like all of Dak's branding in Dallas, and what Los Angeles and New York brings, etc.
Of course, the structure is what it is. You have to operate within it. But if you're asking what is the best structure, that's a totally different conversation. Hard to argue against the current one.