Thanks for the poll, @CyndiFoster! Can you please also post a link to the research you did on Twitter? I'm curious about it.
I'm not in a position to be able to support financially other artists yet, but if I ever get there, I would support just for the sake of supporting the series I love and the artist I admire. Though the rewards seem like nice extras, I think it just makes life harder for the artist (haha, I'm the right one to say that, with my complicated rewards, huh ^^;;; ).
I'm not into physical stuff and actually wouldn't want my name listed anywhere, so the only thing I would find cool is early access. But again, it definitely wouldn't be the decisive factor.
In my Patreon I offer early access to new pages of one of my series, "adoption" of animal characters from Trivia from Nature, wallpapers and things like PDF downloads of hi-res versions of my comics. So far I have had one patron who chose a tier "without reward", and I don't think most of the others really give much importance to the rewards. Most have been pleased with the "animal adoption certificates" and wallpapers, but when I didn't manage to upload some other rewards due to bad connection, nobody complained.
Actually, I don't even know if many of them read the early access pages I post there, since I get about 1-2 comments at most, so maybe the early access isn't all that interesting after all ^^;;;
What I liked were milestone rewards in Tapastic support program (not goals) because it feels more fair to everybody, so I've been working on including this "system" into my Patreon, though the website doesn't make it easy at all. (That's why I have those high rewards there, they are meant more as milestone rewards)
I find these tweets both hilarious and sad... I remember seeing a tweet that really struck me at heart, something along the lines "Patreon support is under $1000/month, future updates are endangered!" - that's just downright threatening and showing that the creator didn't give a damn about their patrons and readers, even about their comic XP