As for the aluminum materiality, they’ll probably come up with some clever marketing — pitching it as a hybrid, specially engineered aluminum that’s stronger, more durable, and more capable than previous iterations. Kind of like when they introduced the 7000 series aluminum, making an already common, less novel material sound unique and new again.
My only gripe with switching back to aluminum is that I never use a phone case, and while my phone doesn’t drop often, it does happen occasionally. With the titanium frame, it’s held up wonderfully — no dents or marks. Its rigidity has also kept the glass front and back from breaking, cracking, or chipping. I definitely don’t have that same confidence with aluminum.
But I am sure, clever Apple will try to convince me otherwise. However, real world use might tell me otherwise.