I think it was cut mostly because it implied you becoming an Elder and Danse a Sentinel, and well it wouldn't work really. An outsider cannot become Elder just like that. It would be disrespectful to the lore. As far as i know that is the only quest content that was cut from the game, so it was probably not a question of resources to implement it, mostly it just didn't fit the game and said lore. That is just my take on it though, i haven't read up on it extensively, only listened to the cut speech from Danse.
Also more Curie!
EDIT - Sorry if this is spoiler stuff, i just don't see anyone else using the tags, so i am letting it all out there.
With my BoS ending, I basically can't go anywhere with Danse since they're setting up posts all around the Commonwealth. I just hope there's a solution to have Danse around. Maybe replacing Maxson with a synth.
Many people still believe and follow Danse, so I don't care about becoming the Elder, I want to have Danse become the Elder if possible. He's actually like to help people regardless of whether they're humans or ghouls, even against torturing synths, regardless of whether you completed his personal quest or not. Maybe there is a requirement like somehow convince them or prevent the data showing that Danse is a synth, he still knows he's a synth but we could find a way to fabricate evidence with the help of either the RR or the Institute.
why are you telling me those things? There's only so much Danse angst I can handle
I'm trying so hard to play a rom com game instead of a wasteland war mess lol
I like broken romance where you're their support pillar. That's basically what Danse is, a broken man. A bit of angst is not bad. I'm not a fan of comedic romance like they have with Iron Bull. It wasn't my definition of romance when Cullen and the others walk in on Iron Bull and the Inquisitor.
I wondered if they cut it because of time, budget, or just decided they don't want to go in that direction.
Him going through the railroad was the most obvious, but I had doubts since Deacon or anyone in the RR should have known *something* about Danse. It wouldn't be a reach to think that the institute had a "let's release them without them knowing their origin and see how far they get" phase, but I have to play more to get more info on that.
They could do marriage in skyrim, because the mechanic was simple and changed little, something like that wouldn't fly in F4. I blame it on whatever scripting engine they have set up, if main missions have clipped dialogue and janky pathfinding, a wedding would explode the game.
I've heard about the elf brand (and was kinda creeped out by it), but I haven't played the last DLC yet so I don't know about the rest. I just heard that some people disliked where they went with Dorian's romance.
Railroad is a loose organization. They don't keep records, some synths go through facial changes, some are just identity. Not everyone can keep tracks of every synth out there. Some of them they have to do in a hurry if you go through their quest. As for the Institute, even if that's the case, they would know about the existence of Danse, but they never had, nothing in the terminal indicated they're keeping tracks of him. There's just no reason to do so. All the synths being replaced know their purpose.
I wonder how hard it would be to have a few lines changes. Modders do it all the time, Skyrim does it all the time, so I don't suppose it should be that hard. It's more about recognizing a certain vicinity before the scripted line activated. They could also do random generated lines when entering area like some companions had, so they could include romance lines throughout the commonwealth. I don't think how wedding would complicated it, maybe additional lines when talking to them, seeing as they have all the wedding components in the game.