Something I am thinking reading all of this - maybe it's important to differentiate make-work that can be gotten rid of, and things that can't.
If the extended family wants to get together for dinner, and people see value in that, it does mean work, and not work everyone enjoys. And things like who has the biggest house are real factors.
Family dinners might be the one area where it is almost impossible to pare down work to very little, and the alternative of not having family celebrations doesn't seem all that great either.
People can be weird about this stuff too. Since my grandmother died our dinner tended to be at my mom's or my aunts who live in town, who have large homes. One uncle hosted Christmas Eve as he didn't have room for everyone to sit to eat. Other siblings were out of town or disabled.
Mom and aunt were really getting tired, so my sister and I offered to take over, though neither of us had room, so we rented a church hall. We thought it was great, we did decorations, we had music, there was a nice commercial kitchen and dishwasher and we invited a few extra people as well. We didn't ask for anyone to bring anything really except contribute to costs somewhat and help clean up. We thought it went well, we had a ton of fun cooking together while our husbands took the kids to do fun activities, and thought that maybe next time we could invite a few more people without family to fill up the place a bit more.
Extended family - including mom and aunt - decided that no, they didn't like the hall. It was much to hall-like and they wanted proper dinner service and cloth napkins etc.
We didn't do it again but man, it seems to me like cutting off your nose to spite your face.