Definitely. Maybe Sanji and Nami will get together and return to the Baratie and Cocoyashi Village. Who knows?
I don't know about that necessarily (although it would make me happy!) but I can see Nojiko adopting a little girl and Nami being an aunt.
So far as meetings that are foreshadowed in the canon, I have some hope that Yorkie got a miracle cure and gets to be part of the Brook, Laboon, Crocus (and Rayleigh?) reunion.
I was about to say that I wanted Robin to go back to Alabasta to find the "first" poneglyph that was in the cave in the middle of nowhere, but I just looked it up and apparently that was an anime-only filler. Dang it! I was really looking forward to that reveal!