Personally I want more Enclave. And before anyone says it the Enclave are quite clearly an organised military organization that can have bases all over the American continent. They're quite clearly very American. And "American" isn't just DC. Raven Rock was one of the found bases (as was the oil rig in 2). Wouldn't surprise me if they have more presidents either. People or AI. At this point they might even have a council if they're still around. A kingdom doesn't fall just because it loses a king. May very well be that each region/large base has its own. Maybe a DLC where there's a continent wide hunt all over America and beyond to ensure they're wiped out once and for all? "Wastelanders: This is the enemy!" Or maybe a choice of doing that and siding with them? I'd actually like to see the Enclave's more grey side. We NEVER saw that faction wide. At least not in terms of "Ok, there's doubt. Let's stew on it for a bit without dying right after" (As we can do with the factions in this game). We see only the dark side so far. Put a little (grey) light on them, give the player the choice to join them or not and wrap it all up with an ending of Enclave making a sacrifice/disbanding somehow or got slaughtered at the end with no base spared because they were hunted down to extinction by the wasteland that had Brotherhood or Institute or other high tech support that has a strong military or advanced detection techniques to show everyone where they hide" and everyone wins. Closure? Check. End of Enclave once and for all for all as a large presence without doubt? Check.
And yes, there's NV with "remnants". But those could be remnants from only their own area/division and they could be cut off from the other divisions within the Enclave faction on a whole. It's a good way to ensure there's less risk of detection. Some real world organizations actually do this. From what I gather of the Enclave they're also loyalists so they would never admit it when unquestioned either without good cause. And at this point we're just left hanging with only assumptions being made one way or the other. Blowing up those two bases doesn't translate to they're done for (Which isn't really confirmed for sure one way or the other in game). And the argument can also be made that they were also "done for" when the oil rig went boom. So if you're going to question my logic, at least use other reasons beyond "because bases went boom". That argument has been repeatedly beaten to death with neither side getting anywhere.