I think LDY can definitely support a winter sun route and FAO looks like a good option. Personally, (and not considering whether it could actually be viable) I'd love to see BGY operating over winter. At least 1 weekly, or it may require 2 weekly for those who go away for less than a week.
I hope the negotiations at LGW turn out favourable! Wonder will it be twice daily!? Or an E195 daily... some variety for the spotters out there!