-_-...that doesn't even make any sense at all, that you're even considering that. Eragon is the main character, making him die even before he's even killed Galbatorix would completely dislocate and screw the entire plot. Three books have been made just for that moment, three books have been made just so that Eragon could grow stronger and be prepared for his fight with Galbatorix. There's not a single writer that ever would do such a thing as it destroys the entire series.
That would be the same as Frodo dying and not throw the ring into Mount Doom while he carried it all the way there or that Harry Potter would die just before he would kill the last piece of Voldemort's soul

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Everything was prepared for Eragon, do you really think they are going to let him die and give the honour to a new rider that has barely any experience at all (if not zero) as when should he have gained that? There is no time till there's peace to train that person.
What you're saying is something even worse than blasphemy.
Also it's not because the cover is a green dragon it's going to be play an important role. It's very likely that dragon is the last egg, however Thorn was the cover dragon of the second book and still he only appeared in the last chapter, same goes for Brisingr. So it doesn't mean it's going to have a real important rol in the book.
And don't forget Angela's prediction, as I recall she said Eragon would have a difficult life, but he would live long =/
I think that the rider and the last dragon will appear somewhere against the end of the book and my guess is after Galbatorix is already dead as then Eragon becomes the master and that rider his pupil. Seems a pretty reasonable end, at least better than Eragon dying and some unkown person that just appeared with almost zero power kills the main villain WTH. Especially when you consider that if Eragon dies, Saphira should die too as the pain of loosing your rider is monsterous. Which writer is going to let one of his two maincharacters die just before the climax and let the other go mad or comitting suicide? Not to mention that Saphira is last female dragon. If Eragon dies, so will the specie of dragons.
No I think the last dragon and rider are just the symbols for the next generation of riders.
I laughed at this and cant remember why but the idea of harry potter dying before the end would of been alot better xd
And where would they go and why would they go away? Saphira wants to keep the dragon specie alive and Eragon probaly the riders. Who else will keep an eye on Alagaesia to prevent something like Galbatorix ever will happen.
They would leave with the last rider/dragon/dragons? to a place away from humans and elves maybe to help restore the order of the dragon riders?
No idea who the last rider will be, but without any doubt it will not be Roran. Why? Because again that would be a complete dislocation of the plot. He embodies the strength of normal people, people that don't know anything about magic or have special weapons or beasts. He won of an Urgal in wrestling and killed 200 men in one battle. For what? To protect Katrina. If he becomes a rider, that means he will have the same lifespan as an elf...he will outlive Katrina and while he stays young she grews old O_O.
Oh yeh i forgot he was roran stronghammer, i guess he will get some elf/dwarf weapon to make him stronger....
Arya is possible, maybe if Eragon and her get a child it becomes the last rider, who knows.
That sounds possible to me, but i dont think they will get together until the end... Arya stands as the best candidate in my eyes but apart from that i dont know who it could be? Maybe a dwarf rider? the first one? lol
Lord of the Rings remains the best book of all time U_U