Personally my view on the release system is that public releases should not be a full month behind the lowest tiered release. I can't claim to know what effect it would have on subscription numbers but I'd probably put the public release two weeks after the $5 tier. That way you're still giving subscribers a reason to feel like they're subbing for a reason, but the public release is still available without too large of a wait. It would also discourage some people, but not all of course, who might leak the updates. Honestly, it feels like the ones that have the larger gaps between patreon and public releases that suffer the most when a leak happens. Turning the Page, an NTR themed visual novel, is another patreon project that I know has suffered on months where someone leaks the patreon update early. The dev actually posted in the game thread recently saying that ten days was how long it took the leak last time and that seems to be the sweet spot for damage to their patreon numbers in terms. That leads me to believe that an earlier public release could be figured out that would cause fewer supporters to drop out but also potentially bring new supporters in due to more people being able to play the game more quickly.
N_Taii engages with his support base pretty well, so more public players could be a good thing for his numbers, I'd also like to a see a discord server.
On that note... any of y'all artistic? Might not be a bad idea to whip up some signatures so we can "advertise" for lack of a better term.