omg I actually agree with Ian in many points

The only complain I have for Echoes was the hub levels. Even if the game was longer it didnt feel that way. Is analog to traveling. When you go to somewhere unknown, the trip seems really long, but once you are there and return to the point of origin, the trip seems shorter, even if it takes the same time to make both trips. With echoes you knew already there were these three areas to clean, while with Metroid Prime you had no clue what was coming, the phazon mines or phendrana drifts were completly unexpected.
And about Samus agility, shes actually pretty fast in both Primes, but first person doesnt let that to be seen easily. If Retro can make her to act more agile with the remote it would be great, but I honestly have no idea how could that be pulled off in first person. I think that the actual speed of the visor while aiming is perfect, if they make it faster it would be just disorienting and makes precision aiming a lot more difficult.
and oh yes
Dont change it to a third person shooter! because it would suck tons. Third person shooters dont work in claustrophobic enviroments, and it wouldnt be Metroid without claustrophobic enviroments.
Also
Dont even think about putting Samus out of her suit! except some ultra extremely rare ocasion or the final scenes. She loses all her mistery and game companies cant help to sexualize thier female characters, like the art of Metroid Zero Mission, and I dont care if Bill liked it, it was disgusting

she shouldnt be sexualized at all, MP1 was on the right track, in some of the art galleries she's naked but feels like a real woman, not that big-breasts japanese fetish thats so hideous, not to mention the anime style of Samus in Echoes (basically it was a 3D version of the horrible art from Zero Mission), because it doesnt fit at all with Metroid's art direction and enviroments, Nintendo should really give up on Japan with this game, they will never like Metroid like we do, and trying to appeal to japanese only hurts the game in the process for their big fans in the west.
And also another vote for
NOT MAKING THIS A PLAIN FIRST PERSON SHOOTER OR ANY OF THAT HALO-ESQUE NONSENSE so basically dont listen to nemo at all.