Could I legally become a serial killer by never yielding or stopping for jaywalkers? If their crime is caught on dashcam, and I pull over and call 911 immediately after the fact, would there be any repercussions?

Obligatory IANAL, but this one sounds like it might need a test case. If you try, and succeed, there will be a defence named after you. Pretty cool, huh?

If they're not in the crosswalk, that's practically an invitation for you to floor it.

What if it is slow traffic and cars are moving slowly, is it ok to jwalk because i always have that dilemma.

Yeah, you're good to go.

Until you engage me as your counsel, you can not hold me liable for Legal Addvice [TM]. As a promotional welcome, I would suggest that you carefully document the initial percussions, well before the matter of repercussions even arose.