Last sentence, what?

Dead IPs are the ones with no value or die with it's trademark holder. I don't think any of the games you mentioned fall in those categories.

I think it started devlopment on Gamecube, then moved to xbox before finally being developed for 360.

Bad planning much? Halo was being developed for multiple platforms before MS acquired Bungie.

Wouldnt have been too hard for Halo to move it's PC code over to xbox as they had similar archetecture no? Gamecube to xbox was probably a pain, then it was too late in the xbox lifecycle so it got moved to 360 for launch. By that point it was probably quite dated mechanically which didn't help its reviews too much.

Please no. Nintendo can do that with a new IP, metroid has a history and there are expectations in the genre for its fans, it is too risky to make it an entirely different game in hopes of appealing to new fans while distancing itself from the established metroid fanbase who will guarantee a purchase of the game.  I don't mind  good multi-player in Metroid games, but they shouldn't take from the single-player (ala Prime Hunters.) As for the story, I prefer the method of "telling a story through the environment" that Nintendo uses in Metroid game. Fusion and Other M weren't horrible games for me, but they definitely took the appeal out of the story by using a more cinematic approach rather than an environmental one. .

Please no. Nintendo can do that with a new IP, metroid has a history and there are expectations in the genre for its fans, it is too risky to make it an entirely different game in hopes of appealing to new fans while distancing itself from the established metroid fanbase who will guarantee a purchase of the game.  I don't mind  good multi-player in Metroid games, but they shouldn't take from the single-player (ala Prime Hunters.) As for the story, I prefer the method of "telling a story through the environment" that Nintendo uses in Metroid game. Fusion and Other M weren't horrible games for me, but they definitely took the appeal out of the story by using a more cinematic approach rather than an environmental one. .

I agree, don't mess with Metroid and make it more action based/cinematic for the sake of better sales, they can make a new IP that focus on those elements. Take a look at Resident Evil for example, it was a survival-horror game with a dedicated fanbase but Capcom wanted to make it appeal to the Call of Duty demographic which has hurt the brand name and made many long time fans bitter. Now Capcom is talking about bringing the series back to its roots.