Hey! Thanks for all the valuable feed. I usually don't get any and it's nice to see things through an outsiders perspective. I'll definitely keep these in mind for the future of the assets :D
When I create packs I try not to place an asset in several packs in the same marketplace. Meaning, for example, if you stick to just ko-fi and buy the packs you won't pay for the same asset twice. As you said, though, the packs on ko-fi are not complete yet. Since I do "themed packs" there (e.g dragons, undead monsters etc.) and I can't always justify creating packs for the themes that has small number of assets. So it might always be fragmented in that regard :D
For updates on ko-fi, if I ever update an asset with the purpose of fixing some faulty bits, you get the update through a ko-fi message free of charge. Similar with itch, you just need to re-download the file. It just gets tricky with Patreon. On patreon I create an update post and deliver the updated files for the patrons. Yes, that means sometimes you need to be a paid patron to get the update but I also deliver the sprites through patreon messages if need be.
You shouldn't see being a patron as "leeching" :D I get that a lot. People message me about feeling bad for "taking advantage of patreon" but that's the use I've intended for my patreon page. You make a one-time payment to get all the assets and catch up with all the assets I've done, and if you'd like, you downgrade your pledge to a tier you find comfortable paying and keep getting new assets and perks. Itch page is here to support patreon if you just need a couple of assets and ko-fi page is for commissions and themed packs for people irked by patreons subscription system. You should store the assets locally anyways by the way, since we live in an age where websites can change policies overnight and force me to delete everything I have here and migrate to elsewhere. It happened before, it might again.
That being said, I totally get your point. I might do something different for the "access all the assets" sorta purchase thing in the future.
I don't expect the user to guess what's in the yearly packs :D These packs are not loot boxes or kinder surprise eggs. On the front page of my patreon page you can find the link to complete list of assets I have done. I've tried to be as transparent as I can when I created the spreadsheet. It shows you what was created in what year (for yearly packs), in which sites you can get the assets, in what packs the assets are available, what assets would you get if you pledged on each patreon tier for that month specifically.
Thanks again for all the feedback and sorry for the wall of text :D