What does that change? The Overmind is dead and the Zerg haven't stopped being a threat.
Do you really need me to explain to you that being a faction's prisoner and being a faction's ruler are different?
I'm asserting that it's no worse than what any other character in StarCraft has done, actually. But sure, we could give it a try. Do you want to use the wikipedia criteria for that?
You'll have to clarify that. Do you mean that you consider my claim sufficiently close to claiming that Kerrigan is good as to make no difference to you, or do you mean that you are satisfied with my position?
I didn't answer the question because I'm not sure I agree with its presuppositions. I think I played Precursor ages ago, but I remember little of it. It seems to contradict Tassadar's overview of the situation on Chau Sara, where he expresses puzzlement that the Terrans have not attempted to aid the besieged planet. It's my perspective that the Confederates were greatly underestimating the threat posed by the Zerg, if their plan for the Psi Emitters was to use the Zerg against their enemies and then send the Confederate armies to 'mop up' the Zerg. Remember that the Overmind was not actually sending the Swarm to invade the Terran worlds, but seeding them and infesting them stealthily. I believe that if the Zerg were found and assaulted early enough in the process, the infestation could have been prevented.
Certainly, you could make the case that Tassadar's Fleet of the Executor was the major strength of the Protoss, or at least that the Overmind believed that, and I would concede that if so, that would justify the Overmind's change in motivation. But you'd need to support that with the game. By my reckoning the defenders on Aiur were more of a threat than Tassadar's broken fleet, something that should be pretty easily demonstrated by the fact that the Aiur Protoss went to Char and rescued Tassadar and the remnants of his fleet, all while still fighting back the Swarm's invasion of Aiur.
The only thing that matters to me is the plot's coherency. The plot of StarCraft revolves around the Swarm's invasion of Aiur to assimilate the Protoss, and the Protoss having to come together to survive. The only thing that connects the first half of the story - the Terrans and Char and Kerrigan and the Koprulu Expeditionary Fleet - with the rest of the plot is that the Overmind felt it needed to assimilate Humanity's psionic potential in order to achieve its goal. And yet, it invaded Aiur to assimilate the Protoss without Humanity's psionic potential. The motivation that ties the first act into the story is completely forgotten. There is no reason StarCraft could not have started with the Swarm invasion of Aiur in the story as it stands. The only element that connects the plot together has been forgotten.
So you could change 'were' for 'weren't' but it wouldn't change a thing. It's the writers' responsibility to connect their story together, not mine, and not yours. I've already told you I accept your fanon explanation for what happened, but it changes nothing to the fact that the writers screwed up and left this giant plot hole in the story.
What non-Tassadar-and-the-Dark-Templar Protoss did Kerrigan fight, if you're so adamant about not talking about Tassadar and the Dark Templar?
An interesting idea. You'd interpret Infested Kerrigan not as a weapon for the Protoss' destruction, but as some revelatory annunciation? There's actually quite a bit of interesting material to speculate about in that idea, especially in light of StarCraft II's retcons, but in the interest of remaining on track, I sadly must say that if this were true, I don't think that it has been made sufficiently clear in the game. But do bring it up again some other time, because I'd love to hear more thoughts on this.
(How does my spellcheck recognise 'annunciation' but not 'revelatory'? I would've sworn the latter was more common.)
Ah, that's not quite the same. I believed there's sufficient context in the original games to conclude a romantic attraction between the two (though I would not have imagined an actual relationship), but I would not say that this is sufficient basis for it becoming a major driving force of the plot. Not everything needs to be thoroughly explained, and as I've mentioned before, I am perfectly satisfied with your provided explanation to justify how things turned out. But when fanon needs to fill in something this integral to the game's storyline, then I accept that it's a plot hole.