I remember there was a green version of the Angel Padding boy and girl set as well as a green version of the Winter/Sweet bear set. It was on one of the older tier spenders back in 2016. I wish they brought that back because I would have spent $$$ for extremely rare sets that can't be found in the shop.
There are couple of pets like the Husky that are never in aeria shop nor is it in the ingame shop. I hope couple of those pets would be released in the future. There are pets like the Lucy pet featured in aeria shop and I hope they'll be in the ingame shop in the future.