Campaign Creations

I predict that Raynor will become infested -- possibly by choice -- at the end of SC2: Wings of Liberty. In Heart of the Swarm, Raynor becomes Kerrigan's new Duran and remains the player character. At the end of Heart of the Swarm, the Protoss come in and de-infest Raynor, and possibly Kerrigan as well, transitioning between HotS and Legacy of the Void. Raynor works with the Protoss in LotV to unite all factions and races to face the return of the Xel'Naga (or whoever Blizzard drags up to threaten everything). If Kerrigan is de-infested, then a side plotline involves reconciliation with Raynor and the others.

Raynor is hired to find the Mysterious Alien Artifacts, and is later informed by Zeratul that they ARE THE KEY TO THE END OF ALL THINGS.  It turns out that they guy who hired him to find the Artifacts in the first place is Valarian Mengsk, who's planning to use their power to help usher in a kinder, gentler Terran Dominion.  Raynor is skeptical, he's heard this sort of thing before.  One way or another (either with Raynor's cooperation, or by stealing the Artifacts from Raynor), Valarian ends up with most of the Artifacts Raynor found during the campaign.  With the Artifacts under his control, Valarian kills his father and takes over the Dominion and reveals his allegiance to Duran and his Hybrids.  The Hybrids are unleashed on the Sector.

The Zerg Swarm is in disarray thanks to the arrival of the Hybrids, with pieces of it falling under their sway.  Kerrigan is desperate to retain control of the Swarm, and not fall under the sway of Duran and the Hybrids, so she's searching for a way to increase her power.  So naturally Kerrigan goes off in search of the Artifacts Zeratul's been so keen on.  After finding a bunch of her own, she goes after Valarian and the Dominion (possibly trying to ally with Jim and the others, but meeting with predictable results).  She kills Valarian and steals his Artifacts, but Valarian is resurected by Duran as a Terran/Protoss/Zerg Hyrbid.

The Dominion is a mess and is falling apart with Mengsk dead and Valarian being a Zombie Hybrid.  Kerrigan and Duran are busy duking it out all throughout Terran space, with neither side gaining the upper hand.  Jim and Zeratul bring together the remaining Artifacts not held by Duran or Kerrigan together on Shakuras.  This causes problems because now Kerrigan and Duran are both heading for Shakuras to grab the remaining Artifacts so they can take down the other.  Executrix Selendis is now scrambling to get the forces required to defend Shakuras, and runs around getting various Protoss Tribes to help out.  The final battle takes place on Shakuras, resulting in a large three-way battle between the Protoss (+Raynor's Raiders), Kerrigan's Zerg Swarm and Duran's forces.  Kerrigan's forces are overrun by Duran and she surrenders to the Raynor.  Raynor backstabs her and steals her Artifacts and sacrifices himself to destroy Duran and his Hyrbids.  The End.

Infested Raynor still owns.

poontang and the keys to the end all things.

Raynor is killed by Duran at the end of the terran campaign. Then in the Zerg campaign Kerrigan is slain by Duran. And in the protoss campaign Raynor is back in a protoss dragoon shell and with the help of the protoss kill duran in an epic fight by detonating himself to blow duran Battleship above orbit.