I also agree overall w/ Chelsea, I prefer a fully done game, enjoyment wise, vs the episodic type, and I avoided Mystic Destinies initially(before I found out more on the dev and such to solidify it) because being newer to otome when I saw it I was confused by it's pricing and avoided it completely because of said confusion on what I needed to buy for what.
Episodic is less problematic/confusing in that way, but it's probably harder to do in an actual monetized way because you want people to get it, but if you have an upfront price for an unfinished project it can make people more wary of paying, and if you put enough out before adding a price it can also cause a bit of a stink(whether justified or not). Though I know even on tipped/PWYW stuff I try to put in what I can, because people work hard, but I know not everyone is like that.
If anything I say see what you feel most comfortable with, and you can always try it and if it doesn't work out in a way you want try a different way next time.
I'd also say DON'T be afraid to edit a game after on the routes, even big name games modify/patch/rework games. So if you feel an older part needs an update/upgrade... Do it. I think itch lets you right? It happens and shouldn't be vilified for wanting to improve your own work, and if it's a big enough change maybe keep up both versions? IDK. But it's your future games so it's utterly up to you! I'm just here for the ride. :D <3