Ciders and cysers are perfect drinks for Gravmas celebration! Although myself I'm planning citrus melomel for the evening, brings up childhood memories. Tried to share photos of 3x decoction weisen from the eve, but lost fight to foam miserably, for it was not the first bottle for the evening.
My wife said that Christmas specials should be made on Christmas for the next one. Sounds legit. I think that'd be my plan for now.
Indeed, I had a stall once in a melomel with just a few lemons in secondary. Not a big deal since it was secondary, and residual sweetness counterbalanced the tartness nicely. Got really quickly really clean though.
I would say using just the skins for flavor is much more feasible. Also I quarter citrus, slicing them like this is just asking for lots of mush at cost of laborous slicing.