In our case, as a family of 3, we still do a full (but small) turkey when we stay home for Christmas. I always have space to freeze a whole breast. We have a few festive favourites for leftovers that are only for Christmas. We like turkey itself.
Nowadays we don’t do too many full roasts so that is a treat. We all work together, doing prep on 24th and cooking on 25th at a relaxed pace. Mostly someone adding a tray to oven or taking something out whenever they get up from opening presents to refill their glass.
But Christmas Eve is a simpler meal - we Call it “Platter”. A mix of cold cooked and cured meats, fish, shellfish, olives, cherry tomatoes, carrot sticks, peppers, cheese, breadsticks, crackers, pate, hummus...nice things that are treats for us, each person has at least a few things they love even if they don’t love everything (although it’s how dd started eating and loving olives back in the day!) all just laid out in the middle for everyone to help themselves. Leftovers will be eaten over the following few days as we all snack our way through the season.
I’m very open to doing something completely different if that’s what others want - I also do a small but proper turkey roast for thanksgiving (today) so I would still have it once. But there is never a concrete suggestion put forward as an alternative.