Back in the day there was Mangatraders (not a really good site for the authors or scanlators, but a really damn good one for the readers), who asked for a monthly goal in donations to keep running ad-free. I really liked that place (they messed up and got a security leak that forced them to close shop), but didn't have the income to support them back then. If you are offering me the same experience, you can count me in as deep as it goes.
On a parallel note, I would not dislike a system like the one e-hentai has, with their minigame and all.
Also, would it be too hard to get a random button like the one we had at Bato.to? I mean, it's not a fundamental thing I cannot live without, but it was one way to get to explore new things.