A whole batch of cute dorks! That’s what these AUs are, really.
And really, though Jacob is often a bit of a giant terror when he first meets smol people, he ends up becoming quite the cinnamon roll himself. He’s a teddy, I swear (And the other characters usually vouch for that)!
Oscar, of course, is a cinnamon roll too good for this world, too pure, etc etc. Just imagine that timid little guy, all 3.25 inches of him, encountering Jacob at his fully grown 6′5″ height. He would be so so timid and nervous while Jacob would probably be accidentally scary before becoming the gentlest giant around.