Suggestion #1: It would be great, specially if the HM are the one increased the most. That way there would be enough prizes to make more players happy, but without making the Prize Dragons less and less rare.
Suggestion #2: I don't know why, but I can't really like this option. I guess it's because there isn't a good festivity known for the presents to have another raffle during that date, while December/January fits perfectly for it.
Suggestion #3 & #7: TBH I like that prize Dragons are that, prizes; having them in the cave (or different colored versions) would change that completely.
I'm also not sure they would count as a real "consolation prize" as they would be almost as appreciated as the normal prizes (or even more at first, since they would be new and other Prizes have been here for a while), because there would be still few of them at first and people would try to get as many (short) lineages as they can.
Suggestion #4: This, TBH, it's a suggestion I love even if the chances for multiclutches were low or a temporal thing (either for a few months or only on certain dates).
Suggestion #5: Another suggestion I love, because it would mean previous CB Prize Dragons won't end disappearing as players go inactive.
Suggestion #6: Seeing as how low gens are desired not matter how much time passes, I don't think it would change things that much. Yes, CB prize's owners would be able to gift them to their friends and fulfill any IOU faster and all, but that's it. In the end, it wouldn't change things enough to be called an improvement.
IA with this so much.
I would make thing better for prize owners and I think it could (depending on how it's done) make trading an easier thing that going though posts on the trading forum. Win/Win.