MS has now been on consoles 19 years and owns a few IPs at this point. A good number of them dormant. Which would you like to see make a return? Yes, those from newly acquired studios do count.

I'd love to see Captain Skyhawk. Wizards and Warriors. Jet Force Gemini return from Rare.

Aside from that. I'd love to see a Lost Odyssey 2 but even more so a true Blue Dragon sequel. I have the DS  games but meh. Doesn't satisfy me. Tho I guess with a Switch port of DQXI that probably kills what little if any chance it had. Blue Dragon is a very underrated game IMO. Can't forget that Nobuo Uematsu score either. If you even have remote interest in DQ or something similar and BD is BC on XBO then give it a shot.

Freelancer.
Black and White.
Kameo.
Perfect Dark.
Banjo Kazooie.
Killer Instinct.

Funny that we disagree on the Zelda thread/games, but I agree with everything you put here. Wizards and Warriors was my first thought reading the title of the thread, love that series.

Sad to say but D4 is dead. once Swery left Access Games he announced D4 is done.

Haha I remember this.. Peter Molyneux was the ultimate snake oil salesman back then. Its such a shame after he gave us classics like Black and White and Fable.

But to answer OP - Age of Mythology, Lost Odyssey and Perfect Dark.

Quantum Break. Don't really care if nothing else is brought back.

Amped.

Lost Oddysey and Blue Dragon are the only things i miss.

Sudeki
Brute Force
Alan wake