It sounds like you've been quite dedicated to participating in Hive Power Up Day and Power Up Month activities!
Regarding your suggestions, they seem like interesting ideas. We will most likely take them into consideration.
An annual badge (12x PUD) could be a great way to recognize consistent participation and would certainly motivate users to remain active throughout the year.
Although there already is for user postiong every day of the year, an additional badge for those who power up throughout the year could serve as an incentive for the most dedicated ones.
Thank you for the suggestions.