I also think that Emma and Hook would both be the easy-going parent, and their kids would grow up covered in mud, climbing the ship’s rigging, making magical whirlwinds in the backyard (and blaming the dog), trying to swipe cupcakes from Granny’s and smiling the broadest guilty smiles when caught, playing chase around the mayor’s office, and getting into brawls with schoolyard bullies
coming into the house in the evening trailing leaves and flowers and grass, with stained knees and mussed hair
making an absolute mess of the living room because they were building a fort, you see, but forts need turrets, and cannon, and a trebuchet, and that is why the pillows are scattered everywhere and every umbrella in the house is slightly damaged and the broom is tied to the coat rack
digging holes in the garden because they read a book, right, that this is how you build traps, you dig a hole and cover it with leaves and it wasn’t meant for Grandad, okay, he was just in the wrong place at the wrong time
(David can’t quite manage to be angry; Killian can’t quite manage not to be gleeful)
never starting fights but always ready to finish them, with firm notions of honour and fair play and good form, and woe betide any kid in Storybrooke who picks on someone weaker than them or plays a foul in a soccer match or cheats at hide-and-seek
questioning authority and refusing to do anything just because “this is how it’s done”, demanding explanations, and far too good at turning arguments around and asking questions that leave adults at a loss for words
their oldest comes home from school with a bruised lip and a stern note from her teacher and explains that she had to stand and fight because those three boys were bullying her little brother and she had to protect him
(Emma immediately gives her some tips about where and how to punch and kick people to be more effective, while Killian just about bursts with pride and suggests to his wife that perhaps the lass is ready to begin sword lessons)
But they do get into trouble sometimes; when Emma puts on her sheriff face and Killian speaks in his captain voice, they know they’ve gone too far. There are tantrums and protests and tears and and fights and, later, hugs and explanations and understanding. But really, a torn t-shirt or an accidentally-broken window or a messed-up haircut because “I don’t have to go to the hairdresser, see? I cut it myself!” is hardly something to shout about.
And you can always tell if the Swan-Jones kids are around because things get that bit louder and wilder and more fun. They’re always full of ideas and plans and energy, but also delightfully charming and forthright, not to mention adorable, and always ready to help. And yeah, the house is a mess and yeah, they’re always late and yeah, some people arch their eyebrows and make comments and yeah, there are scraped knees and even some broken bones, but that’s okay. There’s no crisis they can’t handle. Nothing too daunting to at least attempt.
And most importantly, they are loved, and loving, and happy. Scraped knees and muddy clothes and toothless grins and all.