Hello [Fuck]! 
Well, the good bits about a winter baby - for me - are:
Dark evenings and dark mornings has meant the early days he wasn't woken by the sun in the morning like now grrr!. So bed time was always in the dark, and mornings he woke later. Awesome :)
Also, wraps are your friend judging by others on here! www.tuppenceandcrumble.co.uk and www.morrck.co.uk. I haven't got one, but I have a very warm baby. He has lived in a vest, babygrow, cardigan to go out, plus blanket, hat and then fold the scratch mitts over on the babygrow. Sometimes he has had a coat, instead of a cardi, or a thinner fleece type snow suit.
Guess it depends on the baby. I'd of got a wrap if he had needed more layers! Oh, and the wrap is your friend for the school run. I don't have to do too many, so again it doesn't bother me. But if I was doing that many a day, again, I'd of got one!
Other plus points. Erm. Being able to hide the postnatal flab for longer! Not being huge in the height of 'summer' hollow laugh. Not needing to shave legs with huge bump! Or for several months after
. Unless you are me and have to display your fanjo far too regularly for your liking.
That said, I'd prefer a spring one again. But, it hasn't been terrible. Ignores all the illnesses on the quiche.