The way I see it, if restrictions are lifted in ANY WAY to do with Christmas, this thing has been a farce.
If they're lifted because cases are down or we've all been vaccinated, great.
But if they somehow come up with a 24hr lift, or 3 days or whatever, what's the point? That's just making everyone in the sodding country travel and mix, and we'll be up again with cases, and life being disrupted in other ways while we try to get them back down. Add alcohol and general merriment into the mix and it's clear that Christmas is not an event well matched to social distancing, so it's pointless to assume anything other than families hugging and kissing on the day.
If it's safe to remove restrictions 'for Christmas', then what the hell are we doing now? Covid is either dangerous or it's not. If it's bad enough for all the restrictions that are in place right now, then IMO it should take priority over Christmas.
If it's not, and it's seen as safe to disregard regs just because it's Christmas then it's clearly not as bad as they're making out and they may as well get back to normal sooner rather than later.
Unless we've really got a grip on this thing, a lift over the Christmas period just makes a mockery of everything we've worked towards with these restrictions.
I think they will probably stick to the rule of 6 and just recommend a quieter than normal Christmas. That will bring huge problems for me, as me and my partner always go to our respective families for Christmas Day. Mine would be fine (6 exactly!), but my partner's family is too big and the way I see it working out would leave him on his own .. which of course I wouldn't allow so we'd probably just have the day to ourselves and then visit people in smaller groups later on.