I thought the OP's menu sounded pretty traditional in a general sense. To me, getting more specific, you are getting into family traditions rather than general ones. Going through her menu and comparing it to what I had growing up versus what I do now, most of the components are the same. Just different recipes and prep:
-Turkey - My family did fairly basic roasting. But people now fry turkeys, smoke turkeys, grill turkeys, etc. I usually cook mine in a crock pot to leave my oven available for everything else. I'm actually going to trying converting the OP's recipe to crockpot
-Potatoes - My family did twice baked potatoes, my husband's family did celery root mashed potatoes.
-Veggie Side Dish - A lot of families do a version of a green bean casserole, but neither my family nor my husband's did. My family did fresh green beans. Now I do oven roasted green beans and brussels sprouts.
Salad - My family did a crudite plate and a relish dish. (Btw, OP could you post this kale, quinoa, apple salad recipe as well?)
Cranberry Jelly - My family did canned and a raw relish kind. Now I do it cooked from scratch with pomegranate juice. And pretty much the only reason I bother is because the leftovers make and excellent Black Friday cocktail when blended with ice and rum.
Stuffing - I grew up with boxed. My husband grew up with from scratch with sausage. I think muffins sound like a viable option.
Pumpkin Dessert - Yes, pie is most traditional. But I also know several people that dislike pumpkin pie, but like other pumpkin baked goods. And Every year there are more and more pumpkin dessert recipes to try, I don't fault anyone for that. I do pumpkin cheesecake with ginger snap crust.
OP - I loved the sound of your menu. But as you can see from the responses here, family food traditions can be very important. While I would not let your guests change your menu, or bring an entirely different menu with them, I do think letting each branch of family bring a favorite dish (if they want to) would be a great way to keep the peace.