Thanks for the feedback. Always interesting, and I'll take note of it all.
Regarding the user interface, I admit I hadn't thought of it, and I'll put it on my to-do list right away. Since a lot of elements are calibrated to fit into a very specific space, it won't be easy, but it's not impossible.
Regarding the zoom, I tested being able to enlarge them to about 50% of the screen (currently 25%), and it seems correct in my current tests. I'll probably offer it starting with 0.5.5, and if there are no problems, I'll enlarge them a little more.
One of the problems with SD photos is that most have small flaws, invisible at normal size or slightly enlarged, but obvious at full screen. In any case, a major project will begin starting with 0.6.0: reviewing all the photos, redoing the ones with flaws, and being able to offer them even larger without them taking over the HD photos (which will also be enlarged because they currently occupy 80% of the screen).
For the galleries, the model detail screen needs to be completely redone, but I prefer to wait until I have a clearer vision of what to properly put there; that will be the last update of 0.5.x.
In any case, it's funny you mention it because yesterday I finished a screen where we'll be able to see the HD photos in large format, categorized by style. I'm still having freezing issues due to texture loading, but the galleries are being tested
Regarding the studio upgrade, I'm currently focusing mainly on consumables via various stores, but I'm thinking of being able to offer it, particularly with the rental of a larger studio, permanent staff, and a few other options. I admit I have no idea how to represent it visually yet, but it's on my to-do list. But in my opinion, I won't tackle it before v0.7.x ^^
Regarding interactions with models, this is also in progress, even if it's only in its early stages. In v0.5.4, an event system is making its appearance. For the moment, it's still in testing, so it's only narrative or with a very small gain/loss, but this first system is in place. It remains basic. Don't hesitate to join my Patreon; I don't post every update here to avoid spamming. Aside from the fact that Patreons have the earlier version, everything remains free on my Patreon as long as you're a free member.
Here's my little roadmap to give you an idea:
v0.5.x really focuses on the basics of shooting, with its consumables, staff, their negative/positive effects, client requests, random events that break up the "I spam the shootings" routine, visitable locations like shops, some of which improve the models' well-being, and a solid base of 15 models. v0.6.x will focus on the model interactions themselves, from simple things like invitations to go out to more complex things like sending them on missions to get awesome photos, or other things I haven't detailed yet in my to-do list so as not to confuse myself ^^
I don't think I've forgotten anything, and thank you again for taking the time to provide this feedback; it's always useful, whether it's to confirm that my roadmap is heading in the right direction or to add additional elements.