I really like your Maria Stark, and of course Jarvis remains full of win. I can easily imagine him older but still very much the same, with little sighs and an occasional tug on the ear and that very expressive face (sometimes trying very hard not to express things).

Howard and Tony seem true to themselves; being in a house with two male Starks sounds like a nightmare!

I like the detail about the ring. I take off my rings just to type. There aren't a lot of rings that would work well with latex gloves when things are dangerous and one needs to be sure the glove isn't stretched or punctured.

It's also fun to see proto-JARVIS!