I think this is a loophole in the 70M league, but I just wanted to check whether you intended it to be there. (Fwiw, my team doesn't exploit this loophole.)
There could be a player who has been active for some years, and already has enough PA or IP to qualify for 2019 WIS, but who missed 2018 through injury, suspension or playing elsewhere.
They will have 2017 listed as their last year of WIS eligibility.
Should they be playable in the 70M league?