Seems like an opportunity to get Yiffalicious available on Steam. The fee for listing something on Steam is still only $100, which seems pretty low relative to the potential income (even compared to cost of bandwidth needed for downloads, in the long run). And I think
Valve might still be waiving the fee for VR-enabled games? So you may be able to get it into the store free. (Greenlight and stuff is long gone, if you haven't been staying up to date; only barrier to entry is the $100 fee)
Maybe a paid DLC or something that allows access to the patreon version? Though I think Steam also allows subscription services. Figuring out pricing may be tricky. I think a lot of people would be interested in one-time payments instead of a monthly fee.
Maybe Steam Workshop integration could also supplement the yiff cloud, reducing hosting costs even more?