Two movies in and we got no interaction with the two characters. If you told me this a few years ago I would be totally shocked. As far as the story goes, no we didn’t need it. But I feel like we should have had something. I always wanted to see how Han and Luke would handle each other and talk about Kylo. It’s more nostalgia and head canon in me, but if the actors were still alive? Why not?
Already answered your own question...no, we didn't need it. Would it have been interesting? Yeah, probably. Lots of things would have been interesting that don't ever happen in these movies. Unfortunately the timeline of the ST put us in a time when Luke was totally isolated from everyone. Maybe they could've worked it into a flashback somehow. That would've been a good way to do it I think.
I would have loved to see this happen. After years apart, the nostalgia and sense of closure over Kylo would have been great. But unfortunately, in the plot structure of this trilogy, this was never going to happen; particularly in the Ben Solo / Kylo Ren character arc where Kylo needed to bump Han off early to go further down the path of the dark side.
It would have been close to that SNL parody. No thanks. Besides, Harrison and Hamill would have taken too much shine from each other.
Before the ST I probably would've said yes. But now I'm very happy with how both Han and Luke were portrayed, which reinforces to me the notion that I need to keep my mind open and my expectations in check when I watch these films.
It would’ve been great to see a reunion between Han and Luke. Sadly, the story made it to where it wasn’t possible. I really don’t know what they were thinking with that (among a ton of other decisions).
Before TFA was released I really wanted to see a scene with Luke, Han, and Leia... and Lando. Once TFA was released I knew we weren't getting that and I'm honestly okay with that. I'm just glad we at least got a scene with Luke and Leia in TLJ. Now if we could just get Billy Dee Williams as Lando in Episode IX I'll be really happy.
I wonder now that Luke is absorbed into the Force, will he meet Han in the afterlife? I thought Luke said to Kylo that he knows Kylo sees Han now. Kylo's reaction to these words tells me it is so. Perhaps in the next film, as Yoda and Obi-Wan appeared to Luke, Luke and Han can appear to Kylo at a critical moment.
I don't think we needed it, but having the trio reunite one time, even if just via hologram, was something I wanted.