My initial thoughts are that it will be similar to how the formats function in MTG. The older cards will grow even higher in price, and cards for newer sets that can only be used in the wild format will probably not be as strong as some of the older cards for the sake of keeping the wild format balanced. There is the possibility as well that a ban list is introduced, so that newer cards can still be made that are strong enough to compete with old cards, but will not be allowed in wild.
@tlsovotl