Hi, I don't have any experience modding ios at all and I'm not even sure if its possible but anyway here's the ideas.

Lock knob path creation, basically allows you to change the path that the lockscreen knob takes when sliding to unlock. Like slide vertical or slide diagonal or slide whatever lol. Hope this can spark an idea if its even possible.

The elusive theming of the settings app, I wonder if its possible to use the general>accessibility> invert colors as a stepping stone to theme settings in anyway.

Anyways like I have said a few times in this thread , don't have a lot of programming knowledge or anything. But it's just some ideas I had tonight.