It has nothing to do with being positive or negative, I don't understand your point there. What you're saying is just rather nonsensical. A pirate co-operative online experience that's a new IP would not mean the revival of Banjo Kazooie or Conker, if Rare wanted to do something safe they would have just started with those projects and expanded out to new ventures. They don't even have the talent to make those games, and by that I mean people experienced in 3D platformers. Yooka Laylee had that and it still failed. Microsoft won't see a reason to make a new Kazooie or Conker game, and while I think there are many reasons they should invest in making new ones, it's hard to get that kind of project on the ground.
What you wrote was an incredible leap in logic based on wishful thinking. Me explaining that isn't inherently negative, I mean I would like a new Conker or Banjo game, it's just not likely. The genres aren't even similar, you would have to go out of your way to try and make the connection between the two ideas. I think if Sea of Thieves is successful then they'll just bank on that IP, or even make a new IP similar to it.
I was being sarcastic, because your responses are usually negative and cynical.
Even if it's just wishful thinking, it's to give people hope of maybe seeing old favorites come back.