I'd go out of my way to buy an Xbox One if I had the money so I could buy Rare Replay but other than that, I wouldn't go near an Xbox One. My brother has a PS4 and the games are pretty similar except for console-exclusives of course. Rare Replay looks really good and seeing as Conker and a few of the other games are 'rare' and expensive, having them all in one place for a really cheap price is worth it and way better than emulation, including all the behind the scenes and extra content which I think is absolutely brilliant. They really should have tried to port it to another console, bloody Microsoft.
Sea of Thieves, I'm not sure about it. I watched the trailer a few weeks ago and it looked nice but I don't know what to think of it yet. Rare have yet to surprise us once again so maybe this could be it but a pirate MMO? Never heard or played such a thing so I have yet to set expectations once I know more. It sounds like a good idea but I'm still in the dark about the idea.