Ohh welcome back Riyadth! Thanks so much for taking the time to write your review! I'm really glad to hear you're enjoying it as we've reached chapter 6! I am having a lot of fun with the story and characters too~
For your suggestions, I thought that you should be able to keep making save files past 9 pages and it would make more pages but I haven't tested it on mac. I will try to look into it but it might take me some time. Also for CGIs I think it's a good idea, as some of the elaborate frames also cover a bit of the pictures. I'm thinking I will go back and add some features when I finish (perhaps a persistent check for all the unique deaths as well). I'll definitely keep a CG gallery suggestion in mind.
on to some spoilers:
About Jonas and the Old Ones, I have no plans to introduce more of them or make more "new" games though I do have at least one "side game" planned for Allele. You're right about the Old One's lore. The dragons absorbed so much of their world's energy, they learned to become immortal and disrupted the cycle of life, causing their world to die. Once the writing was on the wall, the faction split into two groups, one wanting to live out the rest of their years and the other to sacrafice themselves to restore the balance of energy and program the "gods" to oversee this reconstruction in their absence. Jonas was one of the Old Ones that programmed the "gods". Eve stance during this split was never said canonically but it was mentioned I believe somewhere that she and Jonas didn't always get along, hinting that she might have been part of the opposing faction.
The side game planned will be called Allele: Devil's Hand and it's going to be a simplified poker game you play with the LIs on a snowy winter day. simple enough, but I am planning to try to add betting, bluffing and "penalties" to make it more fun and interesting. Of course it might also be fun to add Jonas as a "boss" character to challenge haha. This is planned to be this year's OtomeJam project (much like how Gacha Date was a fun little break from ADW). Best wishes and thanks for your support and feedback!