Michael vs Todd: who will be the last wraith standing as THE face of the wraith?

[Siara.Corvus]

I think Todd would.
I mean, Michael is pretty much running on vengeance, which isn't a very good trait.
Todd on the other hand, is cunning and knows when to wave a white flag in order to move forward.

[tealcvala]

Todd is the last wraith standing, he's more cunning and knows how to get ahead. Micheal was all about revenge and that took him over leading to a bad end for him

[Night Maiden]

Todd.

[Davey]

What are the chances that in a hypothetical Season 6 Michael didn't actually die when he fell, since we didn't even see his funeral? Or a Todd joining the team having no need to feed, perhaps even being willing to take the retrovirus and becoming human?

[DigiFluid]

...who would hold a funeral for Michael?

[Xaeden]

And why would Todd give up trying to expand his position of influence within the Wraith to become a member of a team devoted to exploration and the recovery of technology that could be used to grow Earth's power/ultimately defeat the Wraith?

The plan, by the way, was for Sheppard to release Todd after the first two episodes (which later became a movie script). While we don't technically know that the writers didn't intend for him to return later in the season to join the team, I'm pretty sure it's a safe bet that he would've gone back to being an antagonist and occasional ally of convenience. Not least of which because Christopher Heyerdahl was a full time cast member on "Sanctuary" at the time and thus only available for guest spots on Atlantis.

[Davey]

Can't it be said that Todd wasn't really a true Wraith anymore, like Michael? After all, he accepted not to feed on humans. Just think, a whole culture of Wraith for Season 6 where they did things other than fight, kill, feed, hibernate, growl, sneer, and perhaps went to the beach, to a movie, watched Stargate at home, etc. etc.

[Xaeden]

Todd was interested in gaining an advantage over the other Wraith factions. Not having to feed would have been helpful with that as it would have allowed his faction to grow their numbers. He showed no interest in not fighting, nor did he show any interest in trying to convince all Wraith to give up on feeding once his faction was in power. Their ability to feed makes them dependent on a finite population of humans to sustain themselves, but it also allows them to heal serious injuries and for the latter reason it is unlikely that the entire Wraith population will ever agree to give it up. What is more likely to happen is that they would use the retrovirus on drones who are disposable anyway, while the majority of Queens and scientists will insist on continuing to cull humans. This will allow their population to grow significantly, making them an even greater threat.

If, by some chance, all the Wraith did lose their ability to feed (whether by choice or force), I still wouldn't expect them to give up fighting. They've spent thousands of years thinking of humans as disposable, as prey, as less than, and they're no strangers to vying for power. Without the need to feed their population can again grow unchecked, like it did when they had enough numbers to overwhelm the Ancients. Look what Michael tried to do and what he accomplished in an alternate timeline with an army of hybrids whose population was not tied to a scarce food supply. He partly acted out of a sense of revenge, but he also wanted to obtain power, and to think that that wouldn't similarly motivate the majority of the Wraith in the absence of needing to feed was shortsighted on the part of Atlantis.

To make matters even more complicated, the humans of the Pegasus galaxy are not going to accept the Wraith just because they can't feed anymore. They have suffered for generations and lost countless loved ones because of the Wraith. Do you expect the majority to be rational and understanding and accept a de-suckered Wraith population? No, they're going to continue to want the Wraith dead. That's a great reason right there (outside of the Wraith's natural blood lust) for a de-suckered Wraith population to want to either continue to oppress humans or, worse, wipe them out altogether. Allowing humans to grow in numbers and to advance technologically is not in the best interests of their own survival after everything that has transpired.