BTW, I say that as one of the filthy pirates who downloaded the pirated version and then justified it to myself by contributing $5 through itch.io using the "Name your own price".
Not cool, I know.
Well, Patreon pledge starting price is already low as is. It's only $3, and once you pledged once, you don't have to keep pledging to access the current month's build.
All patrons get basically the same thing, regardless of the tier, the only difference is that some tier gets the build earlier.
That's pretty much what you're suggesting but less hassle on my end.