So I'm pretty sure, if given a vote, I'd go 'no' to Harriet Tubman. It strikes me as an incredibly divisive gesture, but I'm probably in the minority and it's almost certainly not worth y'all's time for me to elucidate my thoughts. I think Morgan Freeman's got it right: "How about you stop thinking about me as a black man and I'll stop thinking about you as a white man? Hi, my name is Morgan Freeman; what's yours?" That'll do for me, too, and I think we can extend it to pretty much anything. Judge people for their actions and, to a lesser extent, their words. It's one of the true beauties of the internet in its current incarnation: you don't know much about the people you interact with outside of their virtual actions and words. I *love* that about it.
I do agree with Jackson's mediocrity, however, and would be open to a new face there. Always wondered why Jefferson didn't get his own permanent bill...