Obviously, it's great as it is! But we all have things we'd like to have seen happen.
For me, I'd like to have seen Niles and Poppy last longer. I thought they were an adorable couple, although obviously Niles needed
Similarly, I thought Julia and Frasier were a great couple. I liked how Julia seemed to be a genuine hardass at first, spurning his advances repeatedly (as opposed to the "rough around the edges but clearly with a heart of gold" types like Kate, Lilith, or Lana), and thought she had developed nicely as a character (but her send-off episode was hilarious!).
I wouldn't have minded seeing Martin pal around with Dr. Winston for a little longer either. Ronee was all right, but I'm honestly not sure how I feel about it overall. Niles needed to end up where he did, but Martin had quite a few options that I think would have worked.
And, of course, Frasier deciding to stay in Seattle for another five seasons would have been awesome!
What about you?