Woodoworkery:
So I guess we just get the ones they pick, that we had on flash
Yes, I believe that's the case. This is what they said in the Flash EOL FAQ thread:
WGTChampion:
I purchased an Avatar, how can I continue using it after Flash ends?
We are planning to release most of the Avatars from the Flash game as apparel items in the mobile/PC versions. When we release an outfit that you owned as an avatar in Flash, you will receive it for free.