That works better for me, because I think it's important that Clark's arrival not be directly connected to Jonathan's death, or else it will eventually create huge problems between Clark and Martha.

And as long as you're being "evil girl from the future," you could always make Lionel conceal the fact that he was responsible for Jonathan's death, but since he's already "helped" Martha once, he could show up and offer to help her out, strictly on a friendly basis, but in a way that would definitely lead to Mionel.

However, as I said to juxtoppozed, I think, somewhere in this thread, I'm not completely sure that Martha without Jonathan is the moral paragon we all think she is, or that she's likely to be more open to Jor-El.

Why, exactly, do you think it would have been a good thing for Clark not to be influenced by Jonathan? I'm not sure I've ever heard your opinions on that.